JOINT ICTP/SISSA STATISTICAL PHYSICS SEMINAR: "The energy landscape of glassy systems or Long time dynamics in mean field glassy models"

[statphys]

JOINT ICTP/SISSA STATISTICAL PHYSICS SEMINAR
Tuesday, 10 November 2009   -    11:00 hrs
(NEW Regular Schedule)

Seminar Room
ICTP Leonardo Building - 1st floor

Florent KRZAKALA
(EPSCI, Paris)

"The energy landscape of glassy systems
or
Long time dynamics in mean field glassy models"

Abstract
Mean field glassy system have been the subject of much studies over the 
last decades. They arise as mean field models for the glass transition, 
but also as models for complex systems and optimization problems. Their 
thermodynamics properties can be solve using the replica, or the cavity 
method.

In this talk, I will introduce a generalization of the cavity method 
that allows to follow Gibbs states in mean field systems when an 
external parameter, e.g. the temperature, is tuned. The method thus 
yields a "static" way to study long time "dynamics" in mean field models 
of glass formers, spin glasses, or random constraint satisfaction 
problems. In optimization problems the method gives limits for the 
performance of the simulated annealing algorithm. It also gives new 
results on the stability and the marginality of the non-equilibrium 
states, on the spinodal point upon heating, and allow to demonstrate the 
presence of temperature chaos.

Reference : Krzakala, Zdeborova ; arXiv:0909.3820v1.