Dissipative dynamics within stochastic mean-field approach
نویسندگان
چکیده
منابع مشابه
Exact Stochastic Mean-Field dynamics
Abstract. The exact evolution of a system coupled to a complex environment can be described by a stochastic mean-field evolution of the reduced system density. The formalism developed in Ref. [1] is illustrated in the Caldeira-Leggett model where a harmonic oscillator is coupled to a bath of harmonic oscillators. Similar exact reformulation could be used to extend mean-field transport theories ...
متن کاملA Stochastic Mean-Field Approach For Nuclear Dynamics
We propose a microscopic stochastic approach to improve description of nuclear dynamics beyond the mean-field approximation at low energies. It is shown that, for small amplitude fluctuations, the proposed model gives a result for the dispersion of a one-body observable that is identical to the result obtained previously through a variational approach. Furthermore, by projecting the proposed st...
متن کاملMetastability in Stochastic Dynamics of Disordered Mean-field Models
We study a class of Markov chains that describe reversible stochastic dynamics of a large class of disordered mean field models at low temperatures. Our main purpose is to give a precise relation between the metastable time scales in the problem to the properties of the rate functions of the corresponding Gibbs measures. We derive the analog of the WentzellFreidlin theory in this case, showing ...
متن کاملOn Simple Mean-Field Stochastic Model of Market Dynamics
We propose a simple stochastic model of market behavior. Dividing market participants into two groups: trend-followers and fundamentalists, we derive the general form of a stochastic equation of market dynamics. The model has two characteristic time scales: the time of changes of market environment (tm) and the characteristic time of news flow (tn). Price behavior in the most general case is dr...
متن کاملDynamics within metastable states in a mean-field spin glass
In this letter we present a dynamical study of the structure of metastable states (corresponding to TAP solutions) in a mean-field spin–glass model. After reviewing known results of the statical approach, we use dynamics: starting from an initial condition thermalized at a temperature between the statical and the dynamical transition temperatures, we are able to study the relaxational dynamics ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bitlis Eren University Journal of Science and Technology
سال: 2019
ISSN: 2146-7706
DOI: 10.17678/beuscitech.633558