Cooperative Phenomena in Statistical Physics: Theory and Applications

Workshop: February 22 - February 28, 1999
Seminar: February 7 - March 5, 1999

Scientific Directors:
  • Michael Baake (Universität Tübingen)
  • Uwe Grimm (TU Chemnitz)
  • Rudolf A. Römer (TU Chemnitz)
  • Michael Schreiber (TU Chemnitz)




  • PRELIMINARY WORKSHOP PROGRAM




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    Sunday, February 21


    19:00 - 21:00 Welcome and Get-Together at the institute

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    Monday, February 22

    Chair: Andreas Schadschneider (morning), Uwe Grimm (afternoon)

    09:15 - 09:30 Opening
    09:30 - 10:20 Holger Frahm (Hannover, script in 2 A5)
    Supersymmetric models of interacting electrons
    10:20 - 10:30 Discussion
    10:30 - 11:30 Coffee break
    11:30 - 12:20 Fabian Eßler (Oxford, script in 2 A5)
    Sine-Gordon quantum magnets
    12:20 - 12:30 Discussion
    12:30 - 14:00 Lunch
    14:00 - 14:25 Ruibin Zhang (Adelaide, script)
    Quantum projective superspaces and tensor representations of SLq(m|n)
    14:25 - 14:30 Discussion
    14:30 - 15:20 Manfred Scheunert (Bonn/Freiburg, script here and another script in 2 A5)
    Covariance of a system of bosonic q-oscillators under q-symplectic transformations
    15:20 - 15:30 Discussion
    15:30 - 16:30 Coffee break
    16:30 - 16:55 Alexander Ovchinnikov (Moscow)
    Exactly solvable frustrated spin 1/2 models
    16:55 - 17:00 Discussion
    17:00 - 17:50 Paul A. Pearce (Melbourne, script in 2 A5)
    TBA equations and excitations
    17:50 - 18:00 Discussion
    18:00 - 19:00 Supper

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    Tuesday, February 23

    Chair: Michael Baake (morning), Rudolf A. Römer (afternoon)

    09:30 - 10:20 Robert V. Moody (Edmonton, script in 2 A5)
    Model sets and their spectral properties
    10:20 - 10:30 Discussion
    10:30 - 11:30 Coffee break
    11:30 - 12:20 Johannes Kellendonk (Berlin, script in 2 A5)
    The cohomology of quasiperiodic tilings: quantitative results
    12:20 - 12:30 Discussion
    12:30 - 14:00 Lunch
    14:00 - 14:25 Shao-Ming Fei (Bochum, script in 2 A5)
    Exactly solvable models of spin ladders
    14:25 - 14:30 Discussion
    14:30 - 15:20 Andreas Klümper (Köln, script in 2 A5)
    The quantum transfer matrix approach:
    The Hubbard chain at finite temperature and crossover phenomena in the XXZ chain
    15:20 - 15:30 Discussion
    15:30 - 16:30 Coffee break
    16:30 - 16:55 Johannes Voit (Bayreuth, script in 2 A5)
    1D fermions with open boundaries:
    Organic conductors and mesoscopic quantum wires
    16:55 - 17:00 Discussion
    17:00 - 17:50 Kareljan Schoutens (Amsterdam, script in 2 A5)
    Fractional exclusion statistics
    17:50 - 18:00 Discussion
    18:00 - 19:00 Supper
    19:30 - Poster presentations

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    Wednesday, February 24

    Chair: Holger Frahm (morning)

    09:00 - 09:25 Angela Foerster (Porto Alegre, script in 2 A5)
    Variants of the t-J model
    09:25 - 09:30 Discussion
    09:30 - 09:55 Daniel C. Cabra (Bonn/La Plata, script in 2 A5)
    Magnetization plateaux in quasi-onedimensional quantum spin systems
    09:55 - 10:00 Discussion
    10:00 - 10:25 Jon Links (Brisbane, script)
    Integrable boundary Kondo impurities in correlated electron models
    10:25 - 10:30 Discussion
    10:30 - 11:30 Coffee break
    11:30 - 11:55 Marcio J. Martins (Sao Carlos, script in 2 A5)
    Unified algebraic solution of two-dimensional lattice models
    11:55 - 12:00 Discussion
    12:00 - 12:25 Ferenc Woynarovich (Budapest, script in 2 A5)
    A relativistic model: The scaling limit of the XXZ chain
    12:25 - 12:30 Discussion
    12:30 - 14:00 Lunch
    14:00 Excursion to Meißen, the city of porcelain

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    Thursday, February 25

    Chair: Paul A. Pearce (morning), Angela Foerster (afternoon)

    09:30 - 10:20 Fa Y. Wu (Boston, script in 2 A5)
    Partition function zeros of self-dual spin systems
    10:20 - 10:30 Discussion
    10:30 - 11:30 Coffee break
    11:30 - 12:20 Doochul Kim (Seoul, script in 2 A5)
    Bethe ansatz solution of the asymmetric XXZ chain and its applications
    12:20 - 12:30 Discussion
    12:30 - 14:00 Lunch
    14:00 - 14:25 Ramesh Pai (Goa, script in 2 A5)
    One-dimensional disordered Bose-Hubbard model:
    A density matrix renormalization group study
    14:25 - 14:30 Discussion
    14:30 - 15:20 Henrik Johannesson (Göteborg, script in 2 A5)
    The one-dimensional electron liquid in an antiferromagnetic environment:
    Spin gap from magnetic correlations
    15:20 - 15:30 Discussion
    15:30 - 16:30 Coffee break
    16:30 - 16:55 Oleg V. Derzhko (L'viv, script in 2 A5)
    Spin-1/2 XX chains with Lorentzian disorder and regular nonuniformity
    16:55 - 17:00 Discussion
    17:00 - 17:50 Vladimir Rittenberg (Bonn, script in 2 A5)
    Phase transition in stationary states
    17:50 - 18:00 Discussion
    19:00 Conference Dinner at the "Sophienkeller", part of castle "Taschenbergpalais"

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    Friday, February 26

    Chair: Alexander Quandt (morning), Jan de Gier (afternoon)

    09:30 - 10:20 Veit Elser (Cornell, script in 2 A5)
    Quasicrystals and Riemann surfaces
    10:20 - 10:30 Discussion
    10:30 - 11:30 Coffee break
    11:30 - 11:55 Nivedita Deo (JNCASR Jakkur, script in 2 A5)
    Correlations and symmetry breaking in random matrix models with gaps
    11:55 - 12:00 Discussion
    12:00 - 12:25 Dieter Joseph (Dresden, script in 2 A5)
    Growth models for quasicrystals
    12:25 - 12:30 Discussion
    12:30 - 14:00 Lunch
    14:00 - 14:25 Ofer Biham (Jerusalem, script in 2 A5)
    Universality classes in self-organized criticality
    14:25 - 14:30 Discussion
    14:30 - 15:20 Jacek Miekisz (Warsaw, script in 2 A5)
    Frustration in microscopic models of quasicrystals
    15:20 - 15:30 Discussion
    15:30 - 16:30 Coffee break
    16:30 - 16:55 Serguei Goryachev (Lille)
    Cooperative effects of interface motion in coarsening cellular structures
    16:55 - 17:00 Discussion
    17:00 - 17:50 Bernard Nienhuis (Amsterdam)
    Classical transport in random media
    17:50 - 18:00 Discussion
    18:00 - 19:00 Supper
    19:30 - Poster presentations

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    Saturday, February 27

    Chair: Fabian Eßler (morning), Manfred Scheunert (afternoon)

    09:30 - 10:20 Theo M. Nieuwenhuizen (Amsterdam, script in 2 A5)
    Thermodynamics of glasses and black holes
    10:20 - 10:30 Discussion
    10:30 - 11:30 Coffee break
    11:30 - 12:20 Andreas Schadschneider (Köln, script, java-applet for the simulations)
    Modelling traffic flow using cellular automata
    12:20 - 12:30 Discussion
    12:30 - 14:00 Lunch
    14:00 - 14:25 Haye Hinrichsen (Dresden)
    Roughening transitions in one-dimensional growth processes
    14:25 - 14:30 Discussion
    14:30 - 15:20 Clement Sire (Toulouse)
    Properties of random walks:
    Persistence and effects of disorder
    15:20 - 15:30 Discussion
    15:30 - 16:30 Coffee break
    16:30 - 16:55 Joachim Hermisson (Tübingen/Karlsruhe)
    Thermodynamical properties of aperiodic Ising systems
    16:55 - 17:00 Discussion
    17:00 - 17:50 Jean Bellissard (Toulouse, script)
    Transport theory revisited
    17:50 - 18:00 Discussion
    18:00 - 18:10 Farewell
    18:10 - 19:00 Supper
    20:00 Concert at the Dresdner Frauenkirche


    Fragen, Hinweise ?
    Questions, suggestions ?
    coop99@mpipks-dresden.mpg.de, Version 4/Mar/99



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