October 87 - July 07

Seminars from October 1987 to July 07

15th October 1987: David Rand Warwick
"What do strange attractors have to do with turbulence?"
22nd October 1987: Mike Kearney Warwick
"One parameter scaling theory of localization - an introduction"
22nd October 1987: Angus MacKinnon Imperial
"Aspects of the quantum Hall effect"
12th November 1987: Michael Proctor DAMTP
"Strong spatial resonance an travelling waves in convection"
19th November 1987: Volker Heine Cavendish
"Microscopic mechanisms for incommensurate structures"
3rd December 1987: David Lowe Aston
"Neural Networks: Automatic machine learning of non-linear pattern processing"
28th January 1988: Alison Walker UEA
"What we can learn from positrons at surfaces"
11th February 1988: Julia Yeomans Oxford
"Layering transitions of interfaces"
18th February 1988: Susan Ryrie
"Particle paths in wavy vortices
25th February 1988: Adrian Wander Warwick
"Cluster models in surface physics"
3rd March 1988: J.K. Bhattacharjee
"Hydrodynamic instabilities in binary fluids"
10th March 1988: David Holton Warwick
"A tricritical bifurcation in doubly diffusive convection"
17th March 1988: Mike Payne Cavendish
"Surface reconstruction in germanium"
28th April 1988: Mike Cates Cavendish
"Theory of microemulsions"
5th May 1988: Nick Manton DAMTP
"Interactions between skyrmions"
12th May 1988: Allan Solomon DAMTP
"Do fractional photons exist?"
19th May 1988: Leonardo Castillejo
"Skyrmion model of superconductivity"
26th May 1988: Mike Kearney Warwick
"Thermal transport in disordered systems"
2nd June 1988: S. Sarkar Rutherford
"Physics from supernova 1987a"
9th June 1988: David Pettifor Imperial
"Quantum mechanics in alloy design"
11th October: Ian Aitchison Oxford
"Topological terms in models of HTC superconductors"
20th October 1988: William Barford Rutherford
"Oxygen hole pairing via Coulomb repulsion. A model for HTC superdonductivity"
17th November 1988: David Miller Warwick
"Does Lande's blade still cut any ice?"
24th November 1988: Nathan Andrei
"The Cooper instability in the presence of spin liquids"
12th January 1989: Phil Smith
"The periodic MINDO molecular orbital method as a surface analytical technique"
26th January 1989: Tom McLeish Leeds
"Dynamics and topology of polymer melts"
9th February 1989: John Wheater Oxford
"Random Lattice Fermions"
23rd February 1989: David Thouless UW, Seattle
"Hopping conductivity in mesoscopic systems"
2nd March 1989: Paul Glendinning Warwick
"Flows and maps of the interval"
25th April 1989: Alan Newell Arizona
"Dynamics of patterns"
27th April 1989: Maurice Rice ETH, Zurich
"High T_c"
11th May 1989: Brian Holland Warwick
"Understanding Quantum Mechanics"
18th May 1989: Alan Bray Manchester
"Path integrals and stochastic processes"
25th May 1989: Susan Cartwright Sheffield
"Z⁰ decays at LEP"
8th June 1989: Richard Needs Cavendish
"Temperature dependence of the band gap of Si"
5th October 1989: Phil Woodruff
"Band Mapping with Photoemission and Inverse Photoemission''
26th October 1989: David Park
"Is Computer Science?"
2nd November 1989: Mark Roberts
"Examples of Symmetry Breaking and Pattern Formation"
9th November 1989: Sam Edwards
"The Ageing of Glass"
16th November 1989: Ben Simons
"Spinless Polarons"
23rd November 1989: Paul Townsend
"Extended Objects, Supersymmetry and Topological Charges"
7th December 1989: David Sherrington
"Neural Networks for Associative Memory"
11th January 1990: Andrew Fabian
"Evidence for Black Holes"
18th January 1990: Mark Warner
"Liquid Crystal Polymers"
25th January 1990: Mike Kearney
1st February 1990: Nathan Mattor
"Intermittency Formation in Turbulence"
8th February 1990: Ian Stewart
"Symmetry Properties of Convection in Porous Media"
15th February 1990: George Rowlands "Stability of non-linear waves''
22nd February 1990: Martin Long
"Spin Coherence from Charge Motion in High T_c Superconductivity"
1st March 1990: Seb Doniach
"Kinetics of Flux Flow in High T_c Superconductivity"
8th March 1990: Ray Dupree
"NMR Studies of High T_c Superconductors"
3rd May 1990: Mike Moore
"The Effects of Disorder and Thermal Fluctuations on High-Temperature Superconductors''
24th May 1990: Emily Stone
"Power Spectra of Forced Oscillators: Distinguishing Noise from Deterministic Chaos"
31st May 1990: Simon Bending
"Investigations of a Two-Dimensional Electron Gas Magnetically Coupled to a Type II Superconductor"
7th June 1990: Selina Siak
14th June 1990: Bob Clark
"The Fractional Quantum Hall Effect: Optical Detection of the Electron Liquid and Extension to the Solid Regime
4th October 1990: John Saunders, RHBNC,
"Nuclear Magnetism of thin ³He Films".
11th October 1990: Peter Knight, Imperial,
"Squeezed States".
18th October 1990: Andrew Lyne, Manchester,
"Millisecond Pulsars".
25th October 1990: Brian Gallagher, Nottingham,
"Universal Thermopower Fluctuations".
1st November 1990: Alan McKane, Manchester,
"Scaling and Universality in Fully Developed Turbulence".
8th November 1990: Douglas Abraham, Oxford,
"Statics and Dynamics of Wetting".
22nd November 1990: Warren Pickett, Cavendish,
"Lattice Statics, Dynamics and Electron-Phonon Coupling in High T_c Materials".
29th November 1990: Tania Monteiro, Brighton,
Approximate title "Quantum Chaos in Rydberg Atoms".
6th December 90: Julie Staunton, Warwick,
"Charge Transfer in Chrome-Nickel Alloys".
17th January 1991: Baldizsar Janko
"Analytic Study of Gutzwiller's Wavefunction for the D-dimensional Hubbard Model"
31st January 1991: Matthew Foulkes
"Pseudopotentials for Quantum Monte Carlo Calculations"
7th February 1991: John Rarity
"What is Two Photons?"
14th February 1991: M. Babiker
"Optical Phonons and Polaritons in Superlattices''
21st February 1991: Paul Matthews
"Dynamics of Large Populations of Coupled Oscillators"
28th February 1991: Doug Gough
"The Solar Neutrino Problem"
7th March 1991: Robin Ball
"Self-similar Crack Propagation Model in 2D"
12th March 1991: Dominic Tylldesley
"Computer Simulations of Molecular Absorption"
25th April 1991: Dimitri Khmelnitskii
"Weak Localisation of 2D Electrons and Negative Magnetoresistance"
2nd May 1991: Keith Burnett
"Generation of Short Pulse Xrays"
9th May 1991: Andrew Gilbert
"Fast Dynamo Action in a Chaotic Web"
16th May 1991: Steve Hayden
"Magnetic Response and Marginal Fermi Liquid Behaviour in Cuprates"
21st May 1991: Uzy Smilansky
"Chaotic Scattering"
30th May 1991: Herbert Huppert
"Geological Fluid Mechanics"
13th June 1991: Helen McNeil
"Physics, Metaphysics and Metaphor"
3rd October 1991: Andrew Turberfield Oxford
"Optical spectroscopy of fractional quantum Hall and electron solid regimes''
10th October 1991: Graham Ross Oxford
Tentative title "Evidence for supersymmetry''
17th October 1991: Richard Jones Cavendish
"Surface driven phase transitions in thin polymer films''
31st October 1991: Rudolf Morf PSI, Zurich "Hierarchical Theory of FQHE: Analysis of its predictions''
7th November 1991: Robert MacKay Warwick
"Chaotic equilibrium states in Peierls chains après Aubry''
14th November 1991: Anita Mehta Birmingham
"The completely inelastic bouncing ball''
21st November 1991: Mike Irwin RGO
"Surveying the universe at high redshift''
28th November 1991: Brian Fulton Birmingham
"Clustering in the nucleus: the observation and study of nuclear molecules''
5th December 1991: Mike Ashby FRS Cambridge
Materials Selection for Composite Design
9th January 1992: Igor Lerner Birmingham
"Mesoscopic conductance fluctuations and statistical approach to Anderson transition''
16th January 1992: Keith Burnett Oxford
"Theory of atoms and ions and plasmas in intense laser fields''
23rd January 1992: Derek Lee Oxford
"Localised states in Bose condensed systems''
6th February 1992: Lenny Smith Warwick
Flow visualization in phase space
13th February 1992: Tony Bell Imperial
"Implosion of inertial confinement fusion targets''
18th February 1992: David Edwards Imperial
"Exchange coupling and giant magnetoresistance in magnetic multilayers''
Please note this is TUESDAY 18th.
27th February 1992: Colin Humphreys Cambridge
"Nanometer-scale E-beam lithography--writing encyclopedias on pinheads''
5th March 1992: Richard Friend Cambridge
"Optoelectronic devices fabricated with polymers''
12th March 1992: Michael Thomson UCL
"Chaos, fractals and indeterminacy in driven oscillations''
30th April 1992: John Chalker Oxford
"Hidden order in a frustrated system''
7th May 1992: Oswild Willi Imperial
"Time-resolved soft x-ray imaging and applications''
14th May 1992: Richard Palmer Cavendish
"Electron-molecule dynamics at surfaces''
21st May 1992: Andrew Parry Bristol
"Conformal invariance and interfaces''
28th May 1992: Dan McKenzie Bullard Laboratories
"Melting and melt-movement in the mantle''
2nd June 1992: John Hinch DAMTP
"Fractal aggregation in sedimentation and compaction''
Please note that this is TUESDAY 2nd June.
11th June 1992: David Crighton DAMTP
"New aspects of wave and stability theory''
14th January 1993: John Nelson Birmingham
"Nuclear Matter at High Temperature"
21st January 1993: David Williams Hitachi
"Coherent Non-equilibrium Phonons: an Induced Peierls Transition"
28th January 1993: Philippe Binder Oxford
"Collective Temporal Evolution in Complex Systems"
4th February 1993: Mike Harris DRA
"Noise Cancellation in Lasers"
11th February 1993: Adrian Wyatt Exeter
"Quantum Evaporation and Excitations in ³He''
18th February 1993: Matthew Turner Cavendish
"Surface-induced Frustration in Ordered Diblock Copolymers''
25th February 1993: Chris Watts Warwick
"Ion Temperature Profiles in Fusion Plasmas''
4th March 1993: Frank Read Manchester
"The He (e,2e) Ionization Process"
18th March 1993: Roger Phillips Rutherford
"Neutrino Oscillations and the Solar Neutrino Puzzle"
29th April 1993: James Vickers Southampton
"Is time-travel possible?''
6th May 1993: Charles Smith Cavendish
"Aharonov-Bohm effect in edge states''
13th May 1993: Artur Ekert Oxford
"Quantum Cryptography''
20th May 1993: Journal Club
`Mathematics and the Bucky Ball', Sternberg and Chung, American Scientist 81 (1993) 56.
Berichter: Robert MacKay
27th May 1993: Brian Buck Oxford
"Sunspots, with application to time series analysis''
ABSTRACT: Astrophysical literature contains many attempts to extract clues to the physics of the sun from the large database of Wolf Sunspot Numbers; in particular, an irregular cycle of eleven years has been known for a long time. Most of the techniques of time series analysis have been used on this data set in recent years. I have selected this interesting record as a test bed for developing new methods of spectral analysis and I will explain how the problem of identifying periodicities in a short time series can be treated by Bayesian probability theory and the method of Maximum Entropy. The fine structure of the derived sunspot spectrum shows some intriguing features.
8th June 1993: David Rand Warwick
"Evolution and ecology in spatially extended systems''
10th June 1993: Roger Penrose Oxford
"Quasicrystals''
30th September 1993: Yu Lu, Trieste
"Charge transfer polarons and optical absorption in Lanthanum compounds''
7th October 1993: No seminar
14th October 1993: Yan-Min Li Warwick
Informal report on San Sebastien Hubbard Model Conference
21st October 1993: Nigel Stocks, Engineering
"Stochastic resonance''
28th October 1993: Andrew King, Leicester
"Small stars = big physics''
4th November 1993: Toby Perring, Rutherford
(probable title) "Spinons in KCuF₃''
11th November 1993: Gil Lonzarich, Cavendish
"Marginal Fermi liquids''
18th November 1993: Mike Rusbridge, UMIST
"Magnetic relaxation in plasmas''
25th November 1993: David Tilley, Essex
"AF IR-spectroscopy of magnetic materials''
2nd December 1993: Mike Payne, Cavendish
"Free energy of diffusion: ab initio simulations on parallel compurters''
13th January 1994: Toby Perring, Rutherford
"Spinons in KCuF₃''
20th January 1994: Henrik Jensen Imperial
"Flux lines in HTC superconductors''
27th January 1994: Martin Dove Cambridge
"Lattice melting at a ferroelastic phase transition''
3rd February 1994: R McNeill Leeds
"Mechanics of animal movement''
10th February 1994: Peter Carpenter Warwick
"Gray's paradox: does the dolphin have a secret?''
17th February 1994: Christoph Keitel Imperial
"Free elecron lasing without inversion''
24th February 1994: David Waxman Sussex
"States at the core of a superconductor vortex''
3rd March 1994: Phil Anderson Princeton
"Theory of HTC superconductors''
10th March 1994: Chris Sachrajda Southampton
"Numerical simulations in particle physics''

28/04/1994	Robin Catchpole, RGO
	"Active Galaxies with the HST"

05/05/1994	Michael McIntyre, DAMTP
	"Potential-vorticity inversion, Lighthill radiation and homoclinic tangles"

12/05/1994	Claude Baesens, Warwick
	"The Effect of a Slow Variation of a Parameter on the Dynamics of Non-linear Systems"

19/05/1994	Peter Main, Nottingham
	"Mesoscopic Effects in Resonant Tunnelling"

26/05/1994	Adrian Wander, Cambridge
	"Automated Tensor LEED; New Challenges in Surface Structure Determination"

02/06/1994	Journal Club, Warwick
	-

06/10/1994	Daping Chu, Warwick
	"The intrinsic quantum Hall effect"

13/10/1994	Balazs Gyorffy, Bristol
	"Quantum oscillations in a superconducting state"

20/10/1994	Ian Lawrie, Leeds
	Scaling in HTC superconductors"

27/10/1994	Joe Wheatley, Cambridge
	"Transport in doped Mott insulators"

03/11/1994	Dwight Barkley, Warwick
	"Highly accurate 3D stability computations of flow past a jumbo jet (modelled as a circular cylinder)"

10/11/1994	Robin Nicholas, Oxford
	"Fractals, fractions and composite fermions"

17/11/1994	John Healey, Cambridge
	"The role of a quadratic resonance in boundary layer stability"

24/11/1994	John Chalker, Oxford
	"Localisation in a random magnetic field"

12/01/1995	Matthew Turner, Cavendish
	"Interfacial Properties of Diblock Copolymers"

19/01/1995	Michael Swift, Theoretical Physics, Oxford
	"Lattice-Boltzmann Studies of Non-ideal Fluids"

26/01/1995	Boris Muzykantskii, Cavendish
	"Nearly Localized States in Weakly Disordered Conductors"

02/02/1995	Paul Madden, Physical Chemistry, Oxford
	"Covalent Effects in "Ionic" Systems"

09/02/1995	Tom Coolen, Theoretical Physics, Oxford
	"Dynamics of Disordered Spin Systems"

16/02/1995	Lev Mikheev, NORDITA
	"Glassy Dynamics of Pinned Lines and Interfaces"

23/02/1995	James Annett, Bristol
	"d-wave Pairing in Superconductors"

02/03/1995	Mike Lea, RHBNC
	"Magnetoconductivity of 2D Electrons on He"

09/03/1995	Keith Barnham, Imperial College
	"Quantum Well Solar Cells"

16/03/1995	James Binney, Theoretical Physics, Oxford
	"Construction of Invariant Tori and Integrable Hamiltonians"

27/04/1995	Jonathan Halliwell, Imperial College
	"The decoherent histories approach to quantum mechanics"

12/10/1995	Mike Moore, Manchester
	"The phase diagram and phase fluctuations in type II superconductors

19/10/1995	Rob Smith, Birmingham
	"Can we tune the superconductor-insulator transition with magnetic impurities

26/10/1995	Mike Godfrey, Manchester
	"SIC DFT of bandgap renormalisation

2/11/1995	Mark Hindmarsh, Sussex
	"Formation of topological defects

9/11/1995	Mark Hadley, Warwick
	"Is there an alternative to quantum gravity?"

16/11/1995	Paul Bressloff, GEC
	"Self-organising neural networks near the AI limit

23/11/1995	Keith Moffat, Cambridge
	"Magnetohydrodynamics of planets, stars and galaxies"

30/11/1995	Tim Sluckin, Southampton
	"Liquid Crystals at Surfaces"

25/01/1996	Mike Kearney, Loughborough
	"Drift, diffusion and non-linear propagation on tree structures"

01/02/1996

Volker Heine, Cambridge

"The floppy/stiff duality and mechanism for structural phase transitions in silicate framework structures"
Silicate framework structures consist of rather stiff units (tetrahedra and octahedra) rather loosely jointed at their corners by shared oxygen atoms. Rigid Unit Modes are special phonons which are geometrically allowed possible motions while units remain completely rigid. They provide pathways for soft mode phase transitions and also have wider application to fluctuations, atomic ordering, the theory of the transition temperature, pressure effects, negative coefficient of expansion, and adsorption sites in zeolites.

08/02/1996	Gerard Hyland, Warwick
	"From complex numbers to vector algebra via quaternions"

15/02/1996	Allan Boardman, Salford
	"Microwave solitons in magnetic films"

22/02/1996	Paul Matthews, Nottingham
	"Convection in sunspots"

29/02/1996	Tao Xiang, Cambridge
	"Superfluid anisotropy in YBCO: Evidence for pair tunneling superconductivity"

07/03/1996	Graham Shore, Swansea
	"Faster than light photons and black holes"

14/03/1996	Journal Club, Warwick
	-

22/04/1996	Konstantin Matveev, MIT
	"Coulomb blockade in quantum dots"

02/05/1996	Simon Phoenix, BT, Martlesham Heath
	"Quantum Cryptography--protecting our networks with quantum mechanics"

07/05/1996	Paul Higgs, Manchester
	"Thermodynamics of RNA folding"

16/05/1996	David Hughes, Leeds
	"Suppression of chaos in non-linear models of dynamos"

23/05/1996	Subir Sarkar, Oxford
	"Probing the early universe"

30/05/1996	Robert Pettifer, Warwick
	-

06/06/1996	David Sherman, Bristol
	"High pressure electronic structure and phase transitions of iron compounds and the nature of the earth's core"

13/06/1996	Journal Club, Warwick
	-

10/10/1996	Miron Amusia, Imperial College
	"Atoms as multi-particle systems"

17/10/1996	Robin Ball, Cavendish
	"Mechanisms for global optimization of river networks from local erosion rules"

24/10/1996	Nick Hill, Leeds
	"From the microscopic to the macroscopic: pattern formation by suspensions of swimming micro-organisms"

31/10/1996	David Lowe, Aston
	"From financial markets to the research assessment exercise: Some recent developments in the application of artificial neural networks"

07/11/1996	Alexei Tsvelik, Oxford
	"Luttinger and Fermi liquids: stability with respect to interchain hopping"

14/11/1996	George Japaridze, Sussex
	-

21/11/1996	Richard Dendy, Culham
	"Fusion product transport in strongly turbulent plasmas"

28/11/1996	Andrew King, Birmingham
	"Some unsteady free-surface flows"

05/12/1996	Stephen Julian, Cavendish
	"Strongly correlated electrons in the T 0 limit: heavy fermions and other exotica"

16/01/1997	Andrew Steane, Clarendon
	"Stabilising quantum behaviour by quantum error correction"

23/01/1997	James Nicholls, Cavendish
	"Electron-electron interactions in 1 and 2 dimensions as observed in GaAs systems"

30/01/1997	Frank Hekking, Cavendish
	"Quantum fluctuations in the equilibrium state of a thin superconducting loop"

06/02/1997	Frank Pinski, Warwick
	"The electronic structure and phase diagrams of alloys"

13/02/1997	Matthew Turner, Warwick
	"Polymers, BSE and CJD"

20/02/1997	Eric Blackman, Cambridge
	"Aspects of dynamo theory and the 'backreaction' problem"

27/02/1997	Tom McLeish, Leeds
	"On the trail of topological fluids"

06/03/1997

Steve Hayden, Bristol

"The de Haas van Alphen effect in the mixed state of superconductors"
The de Haas-van Alpen effect (Landau quantum oscillations) has now been reported in a number of type II superconductors, including NbSe₂, Nb₃Sn, V₃Si, CeRu₂ and the borocarbides. This technique is potentially a powerful probe of the superconducting state. I will discuss the present experimental situation, compare observations with a number of theoretical models in the literature and suggest future directions for this work.

13/03/1997	Piers Coleman, Oxford
	"Supercoherent Kondo effect"

28th April 1997: Hans Henrik Rugh Warwick
"A geometrical and dynamical approach to temperature"
9th May 1997: Robert Bingham RAL
"Photon Landau Damping"
15th May 1997: Valodya Falko Lancaster
"Image of local density of states fluctuations in disordered metals seen in resonant tunneling via a single impurity level"
22nd May 1997: Peter Olmsted Leeds
"Non-equilibrium phase transitions in complex fluids"
29th May 1997: Claudia Eberlein Cambridge
"Sonoluminescence as quantum vacuum radiation"

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09/10/1997	A. Mirlin, Karlsruhe
	"Composite fermions and transport near half-filling of the lowest Landau level"

16/10/1997	Alan McKane, Manchester
	"Unstable decay and state selection"

23/10/1997	Fedor Kusmartsev, Loughborough
	"Vortex Nucleation in the Flow"

30/10/1997	Colin Lambert, Lancaster
	"Phase-coherent transport in mesoscopic superconducting structures"

06/11/1997	James Annet, Bristol
	"Symmetries, fluctuations and superconductivity in the Hubbard model"

13/11/1997	Andy Schofield, Cambridge
	"Non Fermi liquids - what's all the fuss about?"

20/11/1997	Robin Ball, Cambridge
	"Protein folding and its inverse"

27/11/1997	Robin Nicholas, Oxford
	"Optical properties of skyrmions"

02/12/1997	Henrik Jeldtoft Jensen, Imperial College
	"On the necessary conditions for Self-organised Criticality"

12/01/1998	John Chalker, Oxford
	"Geometrically frustrated antiferromagnets"

22/01/1998	Peter Littlewood, Cambridge
	"Possibilities for Bose Condensation of Excitons in Semiconductors"

05/02/1998	Eugene Terenjev, Cambridge
	"Alignment of spin and nematic glasses by external fields"

12/02/1998	Mike Payne, Cambridge
	"Ab initio total energy calculations2

19/02/1998	Stewart Hodges, Warwick Business School
	"Financial mathematics"

26/02/1998	David Broomhead, UMIST
	-

05/03/1998	Laurence Eaves, Nottingham
	"Magneto-resonant suppression of conduction in quasi-1D Wannier-Stark superlattices"

12/03/1998	To be announced, -
	-

30/04/1998	Mark Smith, University of Warwick, Physics
	"What Light can Theoretical Physics throw on the Murky World of Solid State NMR?"

07/05/1998	Fabian Essler, Oxford, Physics
	"Incommensurate spin correlations in Heisenberg spin-1/2 zig-zag ladders"

14/05/1998	Andy Mackenzie, Birmingham, Physics
	"The metallic and superconducting properties of the layered perovskite Sr₂RuO₄"

21/05/1998	Alexander Gogolin, Imperial College, Physics
	"Random Spin Chains and Anderson Transition in 1D"

28/05/1998	John Keating, Bristol, Mathematics
	"Statistics of quantum energy levels and the Riemann zeros"

04/06/1998	David Logan, Oxford, Chemistry
	"A local moment approach to strongly correlated electrons"

15/10/1998	Nigel Cooper, Birmingham
	"Solitons in Ferromagnets and Quantum Hall Ferromagnets"

23/10/1998	Ian Kogan, Oxford
	"The Quantum Hall Effect From a String Theorist's Point of View"

29/10/1998	Mathew Turner, Warwick
	"Physists thinking about DNA"

05/11/1998	Michael Swift, Manchester
	"The Dynamics of Inelastic Brownian Particles"

12/11/1998	1. Ahmed Al-falou, and 2. Alessandro Flammini, Journal Club, Warwick
	1. "Bifurcation and Limit Velocity in Fracture" 2. "Statistical mechanics of river networks"

19/11/1998	1. Rita Tsaousidou and 2. Sayed Razee, Journal Club, Warwick
	1. "Phonon Drag Thermopower in Low-Dimensional Semiconductor Nanostructures" 2. "Magnetic Anisotropy of One-Dimensional Nanostructures of Transi

26/11/1998	Peter King, BP Research
	"Application of Statistical Physics to the Oil Industry"

03/12/1998	Gerrit van der Laan, Daresbury Laboratory
	"Xray Magnetic Circular Dichroism"

08/12/1998	David Cobden, Oersted Institute, Copenhagen
	"One-dimensional electrons in carbon nanotubes"

10/12/1998	Nicola Wilkin, Birmingham
	"A Quantum Liquid of Vortices?"

28/01/1999	Dr. Oleg Zaboronskii, Warwick, Math
	"Burgers turbulence"

04/02/1999	Dr. John Dixon, Warwick, Physics
	"Critical Currents in YBaCu"

11/02/1999	Nick Barton and Jim Hague, Journal Club: Warwick University
	-

25/02/1999	Dr. Igor Smolyarenko, Cambridge
	"Singular Response in Disordered Fermi Liquid"

04/03/1999	Professor John Cardy, Oxford
	"Multiscaling in critical systems with quenched disorder"

09/03/1999	Dr. Alexei Ivanov, Cambridge
	"Relaxation Kinetics of Weakly Interacting Bosons below T_c"

11/03/1999	Dr. Robert Smith, Birmingham
	-

29/04/1999	Julie Staunton, Warwick
	"Spin fluctuations in metals from Ab Initio calculations"

06/05/1999	Don Paul, Warwick
	-

13/05/1999	Yang Chen, Imperial College London
	"Fredholm Determinants as Linear Statistics"

20/05/1999	Ben Simons, Cambridge
	"Random Sublattice Models and Dirty D-wave Superconductivity"

27/05/1999	Rex Godby, York
	"Electronic Exchange and Correlation in Excited States of Real Materials"

14/09/1999	George Rowlands, Warwick
	"Diffusion as a measure of Chaos"

21/10/1999	Nic Shannon, University of Madison-Wisconsin, USA
	"XPS signatures of exotic states"

04/11/1999	Alex Savchenko, University of Exeter
	"Resonant tunneling through localised states in GaAs nanostructures"

11/11/1999	Andrew J Fisher, UCL
	"Flowing Electrons at Molecular Scales: the Scanning Tunnelling Microscope and Nanotechnology"

18/11/1999	Phillip Russel, Bath University
	"Controlling light using photonic crystals"

25/11/1999	Vikram Tripathi, Cambridge
	-

09/12/1999	Noah Linden, Dept of Math, Bristol
	"Quantum Entanglement"

13/01/2000	Sam Edwards, Cambridge
	"Equations for stress in granular materials"

20/01/2000	Robert MacKay, Math, University of Warwick
	"Persistence of spectral projections and Quantum breathers"

27/01/2000	Boris Mouzykantskii, University of Warwick
	"Level correlations in a quantum dot with surface scattering"

03/02/2000	Stephen Roberts and Neil Bowler, Journal Club, University of Warwick
	-

10/02/2000	Simon Crampin, Bath
	"Scanning tunneling spectroscopy: what can be learnt about electron interactions?"

17/02/2000	Igor Yurkevich, Birmingham
	"New sigma-model description of the dirty superconductors"

24/02/2000	Patrick Unwin, Chemistry, University of Warwick
	"Probing the Ins and Outs of Interfaces"

02/03/2000	Fabian Essler, Warwick
	-

09/03/2000	Peter Fulde, Max Plank Institute, Dresden, Germany
	"Mesoscopic quantum effects in cold glasses"

04/05/2000	Thomas Fink, Cambridge
	"The Physics of Prions"

11/05/2000	Nick d'Ambrumenil, Warwick
	"Issues in the Theory of the Fractional Quantum Hall Effect"

18/05/2000	Andrew Millar, Biology, Warwick
	"Time for Living; the molecular construction of Biological clocks"

25/05/2000	Bruce Alphenaar, Hitachi, Cambridge
	"Magnetoresistance of Ferromagnetically Contacted Carbon Nanotubes"

08/06/2000	Andrei Chubukov, UW-Madison, USA
	"Many-body games: two's company, three's a crowd"

12/10/2000	Leonid Levitov, MIT USA
	"Energy excitations in localized electron systems and glasses"

19/10/2000	Adrian Wilson, Physics, Warwick
	"Towards a virtual biopsy"

26/10/2000	Raphael Blumenfeld, Physics, Warwick
	"Stress transmission in a new state of granular matter"

02/11/2000	Michael Wilkinson, Math, Open University
	"Spectral Correlations: Understanding Oscillatory Contributions"

09/11/2000	Martin Evans, University of Edinburgh
	"Nonequilibrium Statistical Mechanics and q-deformed Oscillators"

16/11/2000	Patrick Warren, Unilever
	"Charged Soft Matter"

23/11/2000	David MacKay, University of Cambridge
	"How to Communicate Reliably: the State of the Art in Error-Correcting Codes"

30/11/2000	Douglas Abraham, University of Oxford
	"Dynamics of Wetting and Spreading"

07/12/2000	1. Yuri Adamov and 2. Roddy Vann, Journal Club , University of Warwick
	1. "Fermi gas responce to the time dependent perturbation" 2. "Does Berk-Breizman theory help us to understand nuclear fusion plasmas?"

11/01/2001	Victor Zhitomirsky, Oxford
	"Enhanced excitonic interactions in doped quantum wells"

18/01/2001	Luis Lopez Diaz, Cambridge (on leave from University of Salamanca,
	"Micromagnetism: a formalism to study magnetization processes on a sub-micron length scale"

25/01/2001	Aleksei Tsvelik, Oxford
	"Mechanisms for Ferrimagnetism and Incommensuration in 1D Quantum Systems"

01/02/2001	John Pendry, Imperial College London
	"Negative Refraction Makes a Perfect Lens"

08/02/2001	Robin Ball, University of Warwick
	"Granular Materials - from Plasticity to a Renormalisation Group"

15/02/2001	Yanmin Li, Tokyo-Mitsubishi International ank
	"Let's have a better smile (Physics and Mathematics in Finance)"

22/02/2001	Carla Molteni, Cambridge
	"Pressure-induced structural transformations in semiconductor clusters by first principles molecular dynamics"

01/03/2001	1. Andrea Parisi and 2. Patricia Faisca, Journal Club: University of Warwick
	1. "Ultrasound emission from advancing cracks" 2. "Protein folding 'in virtuo'"

22/03/2001	A. Mirlin Karlsruhe, Germany
	"Classical and quantum transport in random magnetic field"

26/04/2001	Jim Hague, Warwick
	"Electrons, phonons and the band-Mott transition"

03/05/2001	Tony Begley, Associate Editor, Physical Review B
	"How to publish in Phys. Rev. and Phys. Rev. Letters?"

10/05/2001	Julie Staunton, Warwick
	"Can improvements to DMFT be useful for band structure theorists?"

17/05/2001	Victor Gurarie, Oxford
	"Quantum Hall Transition in the classical limit"

31/05/2001	Andrew Green, Cambridge
	"The Information Capacity of Frequency Division Multiplexed Optical Fibres: A Field Theoretical Approach"

07/06/2001	Igor Aleiner, Stony Brook USA
	"Interaction corrections at intermediate temperatures"

04/10/2001	Martin Freer, Birmingham
	"Nuclear Clusters and Molecules"

11/10/2001	Oleg Petrenko, Warwick
	"Frustrated magnets in magnetic field"

18/10/2001	Ellak Somfai, Warwick
	"Wave propagation in granular force chains"

25/10/2001	Ben Sauer, Sussex
	"Testing time reversal symmetry using YbF"

01/11/2001	Dr Chris Hooley, Birmingham
	"Quantum dots: what becomes of the Kondo effect when the voltage gets large?"

06/11/2001	Professor Greg Houseman, University of Leeds
	"Viscous Flow Problems in the Geological Context"

08/11/2001	Dr Mark Bocquet, Warwick
	"Finite-temperature perturbation theory for quasi-1D spin-1/2 Heisenberg antiferromagnets"

15/11/2001	Professor Richard Jones, Sheffield
	-

22/11/2001	Professor Mike Allen, Warwick & Bristol
	"Theory and simulation of inhomogeneous liquid crystals"

28/11/2001	Professor A A Nersesyan, Trieste
	"Quantum critical points in strongly correlated 1D systems"

06/12/2001	Dr Martin Howard, Leiden
	"Accurate cell division in E. Coli: How a bacterium knows where its middle is"

28/04/2002	Robin Catchpole, RGO
	Active Galaxies with the HST

02/05/2002	Prof Vladimir Falko, University of Lancaster
	"Spin-orbit coupling, spin relaxation and quantum transport in lateral semiconductor dots"

16/05/2002	Dr Julian Poulter, Mahidol University, Thailand
	"Polydisperse distributions of homogenous droplet growth"

23/05/2002	Dr Carl Dettman, Bristol University
	-

30/05/2002	Dr Matthew Foulkes, Imperial College
	"Quantum Monte Carlo Studies of Exchange and Correlation in Solids"

06/06/2002	Prof Jim Matthew, University of York
	-

13/06/2002	Dr Peter Thomas, Dept. of Engineering, University of Warwick
	"Sandstorms in fishtanks; Granular Spiral Patterns Under Rotating Fluids"

20/06/2002	Dr Justin Molloy, University of York
	"The molecular mechanism of motor protein, myosin V, studied with optical tweezers"

03/10/2002	Professor Robin Ball, University of Warwick
	"Theory of Diffusion Controlled Growth"

10/10/2002	Dr Mikhail E Portnoi, University of Exeter
	"The two-dimensional exciton revisited"

17/10/2002	Dr Tobias Brandes, UMIST
	"Coherence, decoherence and chaos in coupled quantum dots"

24/10/2002	Dr Rudolf A. R?mer, University of Warwick
	"The Aharonov-Bohm effect for an exciton"

Cancelled due to illness.

31/10/2002	Dr Chris J Mellor, University of Nottingham
	Transport in Magnetically-induced Wigner Solids

06/11/2002	Prof Greg Houseman, University of Leeds
	Viscous Flow Problems in the Geological Context

Important: this talk will take place as part of the Physics Colloquia.

14/11/2002	Dr Annette Plaut, University of Exeter
	"Magneto-Photoluminescence of the Correlated Few-Electron Ground State of Electrostatically Confined Quantum Dots"

21/11/2002	Dr Andrew Armour, University of Nottingham
	"Micro-mechanical systems in the quantum regime"

28/11/2002	Professor Sharon Glotzer, University of Michigan, U.S.A.
	"Supercooled Liquids as Nanostructured Complex Fluids: Insights from Molecular Simulations"

05/12/2002	Prof Igor Lerner, University of Birmingham
	"Tunneling anomaly in the absence of equilibrium"

16/01/2003	Dr Uwe Grimm, The Open University, Milton Keynes
	"Mathematics and Physics of Quasicrystals"

Cancelled due to illness.

23/01/2003	Prof Mike Gillan, University College London
	"Using first-principles quantum mechanics to probe the Earth's deep interior"

The venue will be in Room P564 in the Physics Department.

30/01/2003	1. Chris Westbrook and 2. David Goode, University of Warwick
	1. "A theory of aggregation through differential sedimentation" 2. report on ongoing work

20 minute talk

06/02/2003	Elke Thonnes, University of Warwick
	"Perfect simulation"

13/02/2003	Macleans Ndawana, University of Warwick
	"The Anderson model of localization with scale-free disorder"

20 minute talk

13/02/2003	Evelyn Bain, University of Warwick
	"Protein motion in biological membranes"

20 minute talk

20/02/2003	Dr Andrzej Eilmes, UMIST and Jagiellonian University Krakow
	"Dielectric properties of polymers - microelectrostatic calculations"

27/02/2003	Dr Ville Uski, Royal Halloway
	"Onset of localization in disordered conductors"

The venue will be in Room P564 in the Physics Department.

06/03/2003	Dr Juan P Garrahan, Oxford University
	"Microscopic explanation of dynamical and thermal properties of glass formers"

13/03/2003	Professor Angus MacKinnon, Imperial College London
	"Nanomechanical Systems in the Quantum Regime"

24/04/2003	Prof. George Rowlands, University of Warwick
	Micromagnetics, the old meets the new

01/05/2003	Dr Uwe Grimm, The Open University, Milton Keynes
	Mathematics and Physics of Quasicrystals

Rescheduled talk for the one cancelled in Spring term.

08/05/2003	Derwyn Rowlands, University of Warwick
	A `first-principles' theory of electrons in disordered systems

22/05/2003	Prof. Wim J. Briels, Universiteit Twente
	Simulation of membranes, worms and entangled polymers.

29/05/2003	Dr. Tiffany Walsh, University of Warwick
	Reliable calculation of molecular physisorption on metal surfaces

05/06/2003	Prof. Colin Lambert, University of Lancaster
	Electron transport in carbon nanotubes

12/06/2003	Prof. Andrew J. Turberfield, University of Oxford
	DNA Nanostructures

16/06/2003	Ms Andrea Jimenez-Dalmaroni, University of Oxford
	Epidemic processes with immunization

1pm in P564

19/06/2003	Dr. Nick d'Ambrumenil, University of Warwick
	Fermi Edge Singularity in a non-equilibrium system

Note the rescheduling from Monday to Thursday and from P564 to PS128 (physics main building).

02/10/2003	Prof. Jorge Stephany, Universidad Simon Bolivar
	Photon number oscillations, the WKB approximation and phase space distributions

09/10/2003	Dr. Neill Bowler, Met Office
	Why is rain hard to forecast?

16/10/2003	Dr. Thomas Fink, Cambridge University
	Properties of 1-D random landscapes with applications to microarray analysis

23/10/2003	Dr Stefan Rueger, Department of Computing, Imperial College London
	Content-Based Multimedia Information Retrieval - Challenges and Opportunities

This talk is being scheduled together with the CSC.

30/10/2003	Dr. Yong Mao, Cambridge University
	Random Sequential Adsorption

06/11/2003	Dr. Timothy P. Spiller, Hewlett-Packard Labs
	Quantum information technology

14/11/2003	Dr Herve Isambert, CNRS, Institut Curie, Paris
	RNA folding and unfolding pathways

Note that the talk is scheduled for 11:00 o'clock on Friday in P336.

20/11/2003	Dr. Nigel B. Wilding, University of Bath
	Simulating the phase behaviour of polydisperse fluids

27/11/2003	Dr. Patrick B. Warren, Unilever R&D Port Sunlight
	Simulations of genetic switches --- systems biology from a physicist's perspective

04/12/2003	Dr. Wolfram Just, Queen Mary College
	Modelling of fast chaotic degrees of freedom by suitable stochastic forces

08/01/2004	Dr. Jingsong He, University of Warwick
	Two-peak solitons in non-linear waves

15/01/2004	Grok and Matt, Centre for Scientific Computing
	Informal Users Meeting

This will happen in the PS common room at 01:30pm.

22/01/2004	Prof. V. Falko, University of Lancaster
	Applicability of Ergodicity Hypothesis to conductance fluctuations in metallic wires

29/01/2004	Dr. Roddy Vann, University of Warwick
	Frequency splitting and sweeping in tokamaks

05/02/2004	Dr. Tobias Osborne, University of Bristol
	Quantum states far from the energy-eigenstates of any local Hamiltonians

12/02/2004	Dr. Malcolm Kennett, Cambridge University
	Classical (and some quantum) corrections to magnetoresistance in a 2DEG due to surface acoustic waves

17/02/2004	Graeme Boswell, University of Glamorgan
	Percolation and habitat fragmentation

19/02/2004	HD Dr. Bodo Huckestein, Ruhr-Universität Bochum
	How does the quantum Hall effect vanish at low magnetic fields?

26/02/2004	Dr. Derek K Lee, Imperial College London
	Decoherence in Quantum Hall Bilayers

04/03/2004	James Locke, University of Warwick
	Identifying genetic networks in noisy and varied experimental data: The circadian clock in Arabidopsis thaliana

20 minute talk

04/03/2004	Greg Sutcliffe, University of Warwick
	Simulations of Defect Dynamics in Liquid Crystals

20 minute talk

11/03/2004	Dr. Sergei Ostanin, Department of Earth Sciences, University College L
	Ab initio calculations of lattice dynamics: from the harmonic approximation to stochastic vibrations

08/04/2004	Prof. Igor Aleiner, Columbia Physics Department
	Zero-resistance state and related phenomena in ac-driven two-dimensional electron gas

The talk is scheduled for P520A/B.

20/04/2004	Gregory Falkovich, Weizmann Institute, Israel
	Rain, fractal measures and entropy production

This talk is scheduled together with the Mathematics "Quantum Theory" seminar and will take place in B3.03 of the new Mathematics building at 15:00 - 17:00.

29/04/2004	D. Robert Daniels, University of Warwick
	Some physics of haemaglobin fibers

13/05/2004	Dr. T. Mark Fromhold, University of Nottingham
	Chaos-assisted transport through stochastic webs in semiconductor superlattices: theory and experiment

20/05/2004	Dr. Hermann Schulz-Baldes, TU Berlin, Germany
	Weak disorder expansion of localization lengths for quasi-1D strips

27/05/2004	Martin Elliott, University of Wales, Cardiff
	Breakdown of the quantum Hall effect - an example of self-organised criticality?

30/09/2004	Darryl P Almond, University of Bath
	Anomalous power law dispersions in ac conductivity and permittivity shown to be characteristics of microstructural electrical networks

07/10/2004	Robin C. Ball, University of Warwick
	Fermions without fermi fields

14/10/2004	Celine Boehm, University of Oxford
	Dark Matter as an explanation to the 511 keV emission line: is it a discovery or a coincidence?

21/10/2004	Michael J Kearney, University of Surrey
	Cumulative waiting in discrete-time queues and the area distribution of compact directed avalanches

28/10/2004	Alan Usher, University of Exeter
	Millikelvin magnetometry studies of the quantum Hall effects

04/11/2004	John Inglesfield, University of Wales Cardiff
	Embedding approach to the electronic structure and conductance of large molecules

The seminar has been shifted to 14:00-15:00.

11/11/2004	Dave Cheung, University of Warwick
	Liquid crystals near rough walls

18/11/2004	Stephen R Elliott, University of Cambridge
	Vibrational excitations in disordered systems: localization, Ioffe-Regal crossover and the Boson peak

25/11/2004	Philipp Cain, Technische Universitaet Chemnitz
	Renormalization group approach to the integer quantum Hall effect

02/12/2004	Olaf Schenk, University of Basel
	Symmetric Weighted Matchings and their Applications to Symmetric Indefinite Linear Systems

This seminar is being held together with the CSC seminar series at 3 p.m. Meeting point: Mathematics Common Room 3:00 p.m., starting with tea. Talks are at 3:10 pm in room B3.03 of the Mathematics Institute.

09/12/2004	Organizers: M Amos (Exeter), RA Roemer (Warwick), University of Warwick
	First International Symposium on Cellular Computing

There will be no official lunchtime seminar. However, the First International Symposium on Cellular Computing takes place December 09-10th 2004. More information can be found at http://www2.warwick.ac.uk/fac/sci/csc/centre/events/cellcom04/.

13/01/2005	P. R. Tulip, University of Warwick
	Lattice dynamical and dielectric properties from ab initio electronic structure theory: density functional perturbation theory within the CASTEP code

Read talk

20/01/2005	Matthew S Turner, University of Warwick
	Lipid 'rafts' and the non-equilibrium nature of living membranes

27/01/2005	Katrin Wendland, University of Warwick
	Approaching geometry through conformal field theory

03/02/2005	Chris Marrows, University of Leeds
	Spin polarised currents at finite temperatures

10/02/2005	Igor Sosnin, Royal Holloway
	Low temperature thermopower in mesoscopic N/S systems

17/02/2005	Graeme Boswell, University of Glamorgan
	Habitat fragmentation, metapopulations and percolation theory

Read talk

24/02/2005	Nick Goold, University of Warwick
	Simulations of Diffusion Controlled Growth

03/03/2005	Michael Wilkinson, Open University
	Path Coalescence and Caustics in Turbulent Aerosols CANCELLED

cancelled due to illness

10/03/2005	Robert Marsh, Southampton Oceanography Centre
	Predicting climate change over the next 100 years: feedbacks, uncertainties and surprises

Read talk

22/04/2005	Frank Pinski, University of Warwick / University of Cincinnati
	The Phase Diagrams of Soft-Sphere Systems: Competing Order Parameters and an Overlooked Phase

Seminar has been moved so that we avoid a clash with the lectureship appointment lectures on Thursday, April 21st 2005.

28/04/2005	John Dixon, University of Warwick
	Ionic Solitary Wave Propagation along Actin Filaments

12/05/2005	Philip Moriarty, University of Nottingham
	Patterns, Pathways, and Transport in Nanoparticle Arrays

Cancelled due to diary problems! We are working on having a new speaker in place!

19/05/2005	Michael Wilkinson, Open University
	Separation by mixing flows

26/05/2005	Peter Cummings, Nanomaterials Theory Institute, Oak Ridge National
	Computational and Theoretical Nanoscience

02/06/2005	R. Chitra, Paris
	Pinned Wigner Crystals

09/06/2005	Lorna Stimson, Helsinki University of Technology
	Using molecular dynamics simulations to investigate the possibility of a membrane-mediated mechanism for general anaesthesia

Joint seminar with CSC

16/06/2005	Antonio Rodriguez, E.U.I.T. Aeronautics. U.P.M., Madrid
	Disorder and correlation induced metal-insulator transitions in 1D models

06/10/2005	Ulrich Kleinekathoefer, Technische Universit?t Chemnitz
	Dynamics in molecular systems: classical and quantum mechanically

13/10/2005	Dr Chris-Kriton Skylaris, Physical & Theoretical Chemistry, Oxford
	The ONETEP program for accurate linear-scaling density functional calculations for nanotechnology, biophysics and condensed matter.

03/11/2005	Keith Slevin, Osaka University
	Anderson Localisation: The Numerical Approach

Thu 15 Sep '05: H. Scott Dumas, University of Cincinnati (Maths)
What's so great about KAM theory?
Thu 29 Sep '05: Karl Skau, Surrey (Maths) and visiting @Warwick
A Kinetic Model for Processivity of Myosin-V
Thu 6 Oct '05: Ulrich Kleinekathoefer, Technische Universit?t Chemnitz
Dynamics in molecular systems: classical and quantum mechanically
Joint Seminar with CSC Thu 13 Oct '05: Chris-Kriton Skylaris, Physical & Theoretical Chemistry, Oxford
The ONETEP program for accurate linear-scaling density functional calculations for nanotechnology, biophysics and condensed matter.
Thu 20 Oct '05: Mike Allen, University of Warwick
Soft matter simulations - a few scary thoughts
Thu 27 Oct '05: George Rowlands, University of Warwick.
Dynamics of Nano-magnet arrays
Thu 3 Nov '05: Keith Slevin, Osaka University
Is there an Anderson transition below 2D?
CANCELLED
Thu 10 Nov '05: John Chalker, University of Oxford,
Electron Interactions and Transport Between Coupled Quantum Hall Edges
Thu 17 Nov '05: Ellak Somfai, University of Oxford
Scale invariance and jamming in granular systems
Thu 24 Nov '05: Frank Pinski, Unversity of Cincinatti & sabbatical @Warwick, and
Andrew Stuart, University Of Warwick.
Sampling in Path Space With Application to Vacancy Diffusion.
Thu 1 Dec '05: Philip Moriarty, University of Nottingham,
Patterns, Pathways, and Transport in Nanoparticle Arrays

nda

Thu 5 Jan '06

David Thouless, UW Seattle
Dynamics of quantized vortices in superfluids and superconductors
Thu 12 Jan '06: Simon Crampin, University of Bath
Thu 19 Jan '06: Sasha Gogolin, ICSTM,
Full Counting Statistics
Thu 26 Jan '06: Tim Softley, Oxford
Interaction of highly excited Rydberg molecules with a metal surface
Thu 2 Feb '06: Dario Alfe, UCL
Recent developments in first principles techniques: Melting curve of MgO under Earth's mantle conditions and water-oxide interactions from quantum Monte Carlo calculations
Thu 16 Feb '06: David Mukamel, Weizmann Institute
Traffic jams and ordering far from thermal equilibrium
Thu 23 Feb '06: David Cheung, University of Warwick,
Density Functional Theory of Liquid Crystal Colloids and Defects
Thu 2 Mar '06: Ray Dupree, Warwick
Some new angles on solid state NMR
Thu 9 Mar '06: Henning Schomerus, Lancaster
A simple model for non-exponential relaxation of complex quantum systems
Fri 31 Mar '06: Professor Barry Narod, University of British Columbia
Magnetic permeability and domain structure, and their influence on fluxgate magnetometer noise.
Mon 3 Apr '06: Johannes Voit, German Savings Banks Association, Berlin
What The Einstein Year Did Not Discuss: Brownian Motion And Financial Markets
Thu 20 Apr '06: Debabrata Panja, Institute for Theoretical Physics, Universiteit van Amsterdam
Passage Times for Unbiased Polymer Translocation through a Narrow Pore
Thu 27 Apr '06: Malte Grosche, RHUL
Low temperature ferromagnetism and helical order - quantum phase transitions in NbFe2
Thu 4 May '06: Mike Sutherland, Cavendish Laboratory
Thermal transport as a probe of low energy excitations in the high-Tc cuprates
Thu 11 May '06: Peter Littlewood, Cavendish Laboratory
Non-equilibrium BEC of polaritons
Thu 18 May '06: Nic Shannon, Bristol
Nematic order in square lattice frustrated ferromagnets
Thu 25 May '06: Mike Moore, Manchester
Is there a thermodynamic glass transition?
Tue 6 Jun '06: David Wu, Colorado School of Mines
Kinetics and Pathways of Viral Self-Assembly: Light-scattering and Modeling of Human Papillomavirus Capsids
Tue 27 Jun '06: Ralf Bulla, Universitaet Augsburg, Germany
The numerical renormalization group method for quantum impurity systems
Wed 30 Aug '06: Keith Slevin, Osaka University
Anderson Localisation and the Anderson Transition
Thu 7 Sep '06: David Cheung, Warwick.
Simulation and theory of complex fluids
Thu 5 Oct '06: Jonathan Keeling, Cavendish
"Minimal excitation states of electrons in 1D wires"
Thu 12 Oct '06: Mark Ancliff, Warwick
"A representation-theoretic approach to disordered transport in one-dimension"
Ian Hughes, Warwick
"Magnetic Ordering in Heavy Rare Earth Metals from ab initio calculations"
Thu 19 Oct '06: Andy Monkman, Durham
Can we unravel the light generation mechanism in a polymer LED?
Thu 26 Oct '06: Vadim Cheianov, Lancaster
Ballistic Transport in Graphene
Thu 2 Nov '06: Nigel Cooper, Cavendish
Vortex Lattices and Vortex Liquids in Atomic Bose Gases
Thu 9 Nov '06: Ralph Kenna, Coventry
Scaling Relations for Logarithmic Corrections
Second-order phase transitions are classified according to the values of critical exponents. In the 1960^Òs, four famous scaling relations linking these exponents were discovered and these are of fundamental importance in statistical physics and related areas. In certain important circumstances the transitional behaviour is modified by so-called logarithmic corrections. These are subtle effects that cloud the leading terms, and characterize the system. Here it shown that these logarithmic terms are also inter-related, just as the leading terms are, and a set of new scaling relations for them is presented. Consequently, a long-standing debate is automatically resolved. This concerns the Ising model in two dimensions, an old favourite for statistical physicists. Adding disorder to this system changes its critical behaviour but the precise nature of these changes has been under question. The new scaling relations relate hitherto elusive exponents characterizing these changes to well established ones in an unambiguous and precise fashion. This is one demonstration of how the new scaling relations are expected to become an important tool in modern statistical mechanics.
Thu 16 Nov '06: Lloyd Demetrius, Harvard
Quantum metabolism and allometric relations in biology
Thu 23 Nov '06: Yan Fyodorov, Nottingham
Single-channel scattering as a sensitive probe of the Anderson localization
Thu 30 Nov '06: Doug Cleaver, Sheffield Hallam
Using entropy to generate 3d-periodic soft matter
Thu 7 Dec '06: Toshiki Mima, Keio University
Molecular Dynamics Simulation of Transport Properties of Confined Liquid Crystals
Thu 18 Jan '07: Norio Kikuchi, Analytic Theory of DNA Condensation

Thu 25 Jan '07

Wilton Catford, Surrey
Nuclear Shell Breaking in ¹²Be
Thu 1 Feb '07: Jonathan Yates, Cavendish
Efficient Ab-initio Calculation of the Anomalous Hall Conductivity by Wannier Interpolation
I will present an efficient first-principles approach to calculate Fermi surface averages and spectral properties of solids, and use it to compute the anomalous Hall conductivity and magneto-optical absorption of iron. The method works by mapping the low-energy electronic structure onto a set of maximally-localised, partially occupied Wannier functions. In this way we can calculate Brillouin zone averages at ab-initio accuracy with only tight-binding cost.
Thu 8 Feb '07: Ard Louis, Oxford
Hydrodynamic interactions and Brownian forces in colloidal suspensions: Coarse-graining over time and length-scales
We describe in detail how to implement a coarse-grained hybrid Molecular Dynamics and Stochastic Rotation Dynamics simulation technique that captures the combined effects of Brownian and hydrodynamic forces in colloidal suspensions. The importance of carefully tuning the simulation parameters to correctly resolve the multiple time and length-scales of this problem is emphasised[1,2]. Applications to be discussed include: The effect of hydrodynamics and Brownian fluctuations on percolation and aggregation, the sedimentation of colloidal particles, dynamic lane formation in driven suspensions, and the direct simulation of a microfluidic nano-pump. [1] Hydrodynamic interactions and Brownian forces in colloidal suspensions: Coarse-graining over time and length-scales, J.T. Padding and A.A. Louis, Phys. Rev. E 74, 031402 (2006) [2] Hydrodynamic and Brownian Fluctuations in Sedimenting Suspensions J.T. Padding and A. A. Louis, Phys. Rev. Lett. 93, 220601 (2004)
Thu 15 Feb '07: Yuri Sherkunov, Warwick
Casimir-Polder and van der Waals interaction between excited and ground-state atoms
Thu 22 Feb '07: Jim Hague, Loughborough
Superlight bipolarons in the presence of strong Coulomb repulsion
Recent angle-resolved photoemission spectroscopy (ARPES) has identified that a finite-range Fröhlich electron-phonon interaction (EPI) with c-axis polarized optical phonons is important in cuprate superconductors. Thus, it is interesting to determine what sorts of phonon-mediated unconventional pairing are possible. To this end, schemes that can cope beyond the limited range of applicability for BCS theory need to be developed. In this talk, I describe results from two major extensions: A high-order weak-coupling expansion (extended Eliashberg theory) and an advanced continuous-time quantum Monte-Carlo algorithm (CTQMC). I first demonstrate how expanding the electron self-energy to second order in the binding energy leads to the conclusion that d-wave superconductivity can be mediated by phonons, with Coulomb repulsion stabilising d- over s- wave pairing [1]. Eliashberg theories may be used for moderate electron-phonon couplings, however, to determine exact results at intermediate to strong couplings we use a CTQMC algorithm that we recently developed for studying bipolarons (two electrons bound by phonons). The CTQMC algorithm is excellent for investigating unconventional pairing possibilities. We have investigated the effective mass and binding energies of singlet and triplet real-space bipolarons on a number of lattice types [2,3]. We demonstrate that bipolarons can be simultaneously small and light, provided that suitable conditions on the electron-phonon and electron-electron interaction and lattice type are satisfied. Such light small bipolarons are a necessary precursor to high-temperature Bose-Einstein Condensation (BEC) in solids. The light bipolaron mass is shown to be universal in systems made of triangular plaquettes, due to a novel crab-like motion. We discuss the conditions under which such particles may form a BEC with an exceptionally high transition temperature [2].
Thu 1 March '07: Joerg Wunderlich, Hitachi/Cavendish
Extraordinary magnetoresistance effects and local control of magnetocrystalline anisotropy in (Ga,Mn)As devices

The family of (III,Mn)V ferromagnetic semiconductors offers unique opportunities for exploring the integration of two frontier areas in information technology: spintronics and nano-electronics. In my talk I will address two novel phenomena recently observed in micro- and nano-structures patterned from this ferromagnetic material with strong spin-orbit coupling, the Coulomb blockade Anisotropic Magnetoresistance effect and lithographically controlled magnetocrystalline anisotropy applied for current induced spin- transfer-torque domain wall propagation.
Thu 8 March '07: Stephen Jenkins, Department of Chemistry, Cambridge
Surface Stability and Electronic Structure of Half-Metallic NiMnSb and MnSb

Half-metallic materials, which exhibit complete spin-polarisation at the Fermi level, hold great promise for device applications in the field of spintronics. Amongst a variety of drawbacks, however, one of the most pressing is a lack of knowledge concerning surface and interface properties. In particular, the relationship between the stability of different surface/interface phases and the presence of surface/interface localised electronic states is of great importance. In this talk, I will describe density functional calculations aimed at elucidating this relationship for various surfaces of the half-metallic semi-Heusler alloy NiMnSb and the half-metallic zincblende phase of MnSb.
Thu 26 April '07: Mark Miller, Department of Chemistry, Cambridge
"Reversible gelation and dynamical arrest of dipolar colloids"
Thu 3rd May '07: Andrew Armour, Nottingham
Dynamics of nanomechanical single-electron transistors
Thu 10th May '07: Marshall Stoneham, UCL
Dynamics at the Nanoscale: Making sense of scent
Even in 1900, a few leading scientists doubted atoms existed, despite the new chemical industry underpinned by atomistic ideas. In 1970, some leading figures in electronics still claimed they had no need to believe in electrons, despite the new microelectronics. Today, we readily accept that matter is quantised (atoms), as is charge (electrons). Yet many are still reluctant to see a role for the quantum phenomena recognised in Planck's constant. But when physical sciences address the nanoscale, there is no way to avoid such quantum phenomena. Even for the biosciences, it is clear that nature must exploit quantum behaviour even at ambient temperatures. One striking result is that you probably have a quantum sensor in your nose.
Thu 17th May '07 Theoretical Colloquium: 09:00 "From semiconductor microstructures to atom traps: non-equilibrium and dynamics of quantum condensates",
Marzena Szymanska, Oxford 09:30 “Magnetic and elementary excitations in novel superconductors: feedback of the unconventional order parameter"
Ilya Eremin, Max-Planck Institut fuer PKS, Dresden 10:00 “High temperature superconductivity from first principles”
Martin Lueders, Daresbury Laboratory 10.45 “Geometric modelling: structure and function”
Stephen Wells, Arizona State University 11:15 “Electron storage, selectivity, and control in oxide nanostructures”
Peter Sushko, University College London 11:45 “First-principles prediction of material properties”
Jonathan Yates, University of Cambridge

Thu 24th May '07: Christoph Sohrmann, Warwick
Compressibility patterns in the integer quantum Hall effect
Thu 31st May '07: Ben Simons, Cavendish
Theory of epidermal maintenance: of mice and men

One of the main challenges in biology is to understand how stem cells and their progeny function to maintain adult tissue. Recent developments in genetic labelling provide access to a wealth of clone fate data at single cell resolution over time scales long enough to address reliably the kinetics of cell fate in mouse epidermis. Drawing on these results, we show that epidermal maintenance conforms to a remarkably simple dynamics involving a critical (Galton-Watson) birth-death process, overturning a paradigm long-held in the scientific literature. Motivated by these findings, we argue that the mouse model can be straightforwardly incorporated into a generalised theory which provides a role for a quiescent stem cell population, and identifies the mechanism of pattern formation seen in human epidermis as an arrested spinodal decomposition. We discuss the implications of these results on the general mechanism of tissue maintenance, repair, and tumour formation.
Thu 6th June '07: Nicholas Curro, Los Alamos
Unexpected Manifestations for quantum criticality in the heavy fermion superconductor CeCoIn₅

CeCoIn₅ may well be the drosophilia for correlated electron physics. This heavy fermion superconductor sits on the border of antiferromagnetism, is a d-wave superconductor, and possibly exhibits a novel inhomogeneous superconducting state in high magnetic fields. NMR measurements have revealed a subtle interplay of antiferromagnetism and superconductivity in this system, and may lead to a new paradigm for quantum critical phenomena in Kondo lattices.