# Mathematical Physics in Berlin: Positivity and Integrability

## Friday, December 16th 2005

### One-day Symposium PosInt05

#### Fachbereich Physik, Freie Universität Berlin

#### Organisers: R.A. Roemer (Physics, Warwick), M. Schmidt (Mathematics, Mannheim)

##### [Sponsored partially by funds from the DFG]

#### Background and Purpose

Mathematical Physics has had a home at the FU Berlin since the early 1970s. With the imminent retirement of Robert Schrader and Michael Karowski, and the previous retirement of Bernd Schroer in 2002, the end of an era has been reached. This meeting is to celebrate the successes achieved in research and teaching of mathematical physics over the years in Berlin and to gather those who were and are involved with the advances in mathematical physics both in Berlin and beyond. Together with Michael and Robert, we want to revisit some of the key steps and advances in quantum field theory, its euclidean variants as well as its integrable "cousins". And we want to see where the current problems in the field are and how a new generation of physicists - many of which have been trained and associated with the group in Berlin in some way - intends to tackle these.

#### A Review of "Positivity and Integrability" by Prof. B. Schroer

Based on past contributions by Robert Schrader and Michael Karowski, the problem of the existence of an interacting quantum field theory is recalled; recent ideas and results on rigorous constructions are reviewed. [download PDF version]

#### Programme

The symposium will bring together leading scientists interested in mathematical physics. The lecturers in the following list are confirmed, their time slots are not.

Time | Title | Lecturer | Affiliation |
---|---|---|---|

09:00-09:50 | Registration | ||

09:50-10:00 | Welcome | ||

10:00-10:50 |
Some tools from stochastic analysis |
Prof. Dr. J. Potthoff |
Mannheim |

10:50-11:00 | discussion | ||

11:00-11:50 |
Q-Adiabatic |
Prof. Dr. R. Seiler |
Berlin |

11:50-12:00 | discussion | ||

12:00-13:00 | lunch | ||

13:00-13:50 |
Integrable systems in contemporary physics |
Prof. Dr. A. Foerster |
Porto Allegre |

13:50-14:00 | discussion | ||

14:00-14:40 |
Remminiscences on positivity |
Prof. Dr. A. Jaffe |
Harvard |

14:30-14:45 | discussion | ||

14:45-15:15 | tea time | ||

15:15-15:25 |
Verabschiedung durch den Fachbereich |
Prof. Dr. I. Peschel |
FU Berlin |

15:25-16:15 |
Die Wissenschaftspolitik in Deutschland |
Prof. Dr. K. Osterwalder, Rektor der ETH Zürich |
Zürich |

16:15-16:30 | discussion | ||

16:30-17:20 |
Quantum Liouville theory and the quantum theory of Riemann surfaces |
Dr. habil. J. Teschner |
Hamburg |

17:20-17:30 | discussion | ||

17:30-19:00 | |||

19:00-22:00 | conference dinner | Ristorante Trattoria "Piazza Michelangelo" | Breitenbachplatz 4, 14195 Berlin, Tel. 030/8245788 |

#### Organisation, Resources

Participation shall be free of charge but be limited to about 50 participants. During the symposium, an afternoon tea shall be provided, lunch is left to the discretion of the participants. We will not charge a conference fee and are able to provide some support for travel and accommodation. **If you signed-up for the dinner, please remember to pay for yourself and each accompanying partner 40 EUR upon registration in cash.**

The workshop will start at 09:00-09:50 am with registration close to room HSA of the Physics Department at the Freie Universität Berlin. The Physics Department is located in Arnimallee 14. See travel for travel details and map for maps of the FUB campus. In case you come by car and need reserved parking in the physics car park, please contact the organizers well before your arrival.

The time available for the talks is 45-50 minutes and they should be understandable also to a non-specialist audience. A standard black board, an overhead projector and a computer projector will be available in the room. If you need anything else for your talk, please let us know.

#### Confirmed Participants

Data should be correct up to 06 Dec 2005, 11:00 BST. This is all the data we hold, so if things appear wrong, contact the organizers at csc-conferences-posint05forums.warwick.ac.uk.

Name | Affiliation | Contribution | 15-16 Dec | 16-17 Dec | Dinner Attendance |
---|---|---|---|---|---|

Anna Beliakova | Mathematics, U Zürich | delegate | x | x | 1 |

Philippe Blanchard | Physics, U Bielefeld | delegate | x | x | 1 |

Detlev Buchholz | Physics, U Göttingen | delegate | - | x | 1 |

Volker Enss | Mathematics, RWTH Aachen | delegate | x | x | 1 |

Rainald Flume | Physics, U Bonn | delegate | x | x until 18.12. | 1 |

Angela Foerster | UFRGS, Porto Alegre | speaker | x from 13.12. | x until 18.12. | 1 |

Klaus Fredenhagen | Physics, U Hamburg | delegate | - | - | 1 |

Regina Geisler | Berlin | delegate | - | - | 1 |

Klaus Hepp | Physics, ETH Zürich | delegate | x | x | 1 |

Rolf Herken | Mental Images GmbH, Berlin | delegate | - | - | 1 |

Arthur Jaffe | Physics, U Harvard | speaker | - | x | 1 |

Michael Karowski | Physics, FU Berlin | delegate | - | - | 3 |

Andreas Knauf | Mathematics, U Erlangen | delegate | - | - | 1 |

Vadim Kostrykin | Mathematics, TU Clausthal | delegate | x | x | 1 |

Konrad Osterwalder | Mathematics, ETH Zürich | speaker | - | x | 1 |

Jürgen Potthoff | Mathematics, U Mannheim | speaker | x | x | 1 |

Thomas Quella | Mathematics, King's College | delegate | - | - | 1 |

Helmut Reeh | Physics, U Göttingen | delegate | - | - | 2 |

Rudolf A Roemer | CSC, U Warwick | organizer | - | - | 2 |

Renate Rothe | Physics, FU Berlin | conference secretary | - | - | 1 |

Martin Schmidt | Mathematics, U Mannheim | organizer | - | - | 2 |

Robert Schrader | Physics, FU Berlin | delegate | - | - | 4 |

Bert Schroer | Physics, FU Berlin | delegate | - | - | 1 |

Erhard Seiler | MPI, München | delegate | x | x | 1 |

Ruedi Seiler | Mathematics, TU Berlin | delegate | - | - | 2 |

Michael Stiller | Physics, U Hamburg | delegate | - | - | - |

Jörg Teschner | Physics, U Hamburg | speaker | - | - | 1 |

Hans-Jürgen Thun | Seeheim-Jugenheim | delegate | 2x | 2x | 2 |

Peter Weisz | MPI, München | delegate | - | - | - |

**Legend:** "x"= accomodation needed, "-"= no accomodation needed, "?"= no information available at present

#### Application

The application deadline **was** Nov 15th 2005.

If you wish to participate, please submit the form below by November 15th, 2005. If you encounter problems doing this, please email it to csc-conferences-posint05forums.warwick.ac.uk or fax it to **+49 1212 67836763637**. If you want to stay overnight, there is a large range of hotels and B&Bs available in Berlin. Please indicate your choice below and we will arrange the booking for you.

Registration form: