Université Paris Descartes

28-29 January 2014 - Schedule

Institut Henri Poincaré
11, rue Pierre et Marie Curie

Université de Cergy-Pontoise


The aim of this annual workshop, in conjunction with the "Journées de Physique Statistique", is to bring together mathematicians and physicists working on disordered or random systems, and to discuss recent developments on themes of common interest. Each of the two days is devoted to a specific topic:

Tuesday 28 January: Synchronization.

        Moderator: Giambattista Giacomin (Paris)

Synchronization is a crucial mechanism which appears in a variety of real world phenomena, when a number of units (particles, cells, oscillators, individuals, circuits...) show a synchronous, or approximately synchronous, dynamical activity. Synchronicity may have different origins: it is often the result of interactions between units, or may be due to an external pacemaker. Synchronicity may be identified in systems made of just a few or very many units, like in multicellular organisms or in colonies of organisms. Moreover the onset of synchronicity may lead to enhancing the characteristics of the interacting units, while in other instances synchronicity may induce substantial changes of the behavior of the single units. The purpose of this day is to give snapshots of ideas, of research directions and of unifying concepts in this field, that uses tools of dynamical systems (random and deterministic, finite and infinite dimensional) and that often demands novel probabilistic ideas, coming from random graph theory and nonequilibrium statistical mechanics.

Preliminary list of speakers: Nils Berglund (Orléans), Paolo Dai Pra (Padova), Bastien Fernandez (Marseille), Christof Külske (Bochum), Khashayar Pakdaman (Paris), Arkady Pikovsky (Potsdam).

Titles and abstracts

Wednesday 29 January: Time delays in stochastic systems.

        Moderator: Jacek Miękisz (Warszawa)

It is known that time delays may cause oscillations in solutions of ordinary differential equations. In biological systems it takes time for biochemical reactions to be completed and for signals to be transmitted between various parts of the system. We will discuss combined effects of time delays and stochasticity on the behaviour of gene regulatory and neural networks and other systems.

Preliminary list of speakers: Fatihcan Atay (Leipzig), Tobias Galla (Manchester), Axel Hutt (Villers-lès-Nancy), Andre S. Ribeiro (Tampere), Martin-Luc Rosinberg (Paris), Raúl Toral (Palma de Mallorca), Jan Wehr (Tucson).

Titles and abstracts
The conference is free and open to all. To facilitate local organization, please register in advance by sending an e-mail with your name, affiliation and mail address to:

                                    with subject: IRS 2014

or mail to Ellen Saada, Laboratoire MAP5, Université Paris Descartes, 45 Rue des Saints Pères, 75270 Paris cedex 06.
Hotel reservations and other practical informations are available on request.

François Dunlop     Thierry Gobron     Ellen Saada
Physique Théorique et Modélisation     Physique Théorique et Modélisation     Mathématiques Appliquées
Université de Cergy-Pontoise     Université de Cergy-Pontoise     Université Paris Descartes
(33)1 3425 7509     (33)1 3425 7511     (33)1 8394 5876

Program of previous sessions: 1994 - 1995 - 1996 - 1997 - 1998 (Moving fronts, Griffiths singularities) - 1999
2000 - 2001 - 2002 - 2003 - 2004 - 2005 - 2006 - 2007 - 2008 - 2009 - 2010 - 2011 - 2012 - 2013