Thermodynamic Formalism for Systems with Markov Dynamics |
| |
Authors: | V Lecomte C Appert-Rolland F van Wijland |
| |
Institution: | (1) Laboratoire de Physique Théorique (CNRS UMR 8627), Université Paris-Sud, Bat. 210, 91405 Orsay cedex, France;(2) Laboratoire Matière et Systèmes Complexes (CNRS UMR 7057), Université Paris VII, 10 rue Alice Domon et Léonie Duquet, 75205 Paris cedex 13, France;(3) Laboratoire de Physique Statistique (CNRS UMR 8550), Ecole Normale Supérieure, 24 rue Lhomond, 75005 Paris, France |
| |
Abstract: | The thermodynamic formalism allows one to access the chaotic properties of equilibrium and out-of-equilibrium systems, by
deriving those from a dynamical partition function. The definition that has been given for this partition function within
the framework of discrete time Markov chains was not suitable for continuous time Markov dynamics. Here we propose another
interpretation of the definition that allows us to apply the thermodynamic formalism to continuous time.
We also generalize the formalism—a dynamical Gibbs ensemble construction—to a whole family of observables and their associated
large deviation functions. This allows us to make the connection between the thermodynamic formalism and the observable involved
in the much-studied fluctuation theorem.
We illustrate our approach on various physical systems: random walks, exclusion processes, an Ising model and the contact
process. In the latter cases, we identify a signature of the occurrence of dynamical phase transitions. We show that this
signature can already be unraveled using the simplest dynamical ensemble one could define, based on the number of configuration
changes a system has undergone over an asymptotically large time window. |
| |
Keywords: | thermodynamic formalism dynamical phase transition Ruelle’ s pressure fluctuation theorem chaos continuous time Markov dynamics Kolmogorov-Sinai entropy dynamical partition function Simple Exclusion Process Contact Process |
本文献已被 SpringerLink 等数据库收录! |
|