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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 Tc"
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 Tc Superconductivity"
1st March 1990
Seb Doniach
"Kinetics of Flux Flow in High Tc Superconductivity"
8th March 1990
Ray Dupree
"NMR Studies of High Tc 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 Tc 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
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"

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 Tc"

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

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?
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

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.