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Variational approximations for stationary states of Ising-like models

  • Alessandro Pelizzola
Regular Article

Abstract

We introduce a new variational approach to the stationary state of kinetic Ising-like models. The approach is based on the cluster expansion of the entropy term appearing in a functional which is minimized by the system history. We rederive a known mean-field theory and propose a new method, here called diamond approximation, which turns out to be more accurate and faster than other methods of comparable computational complexity.

Keywords

Statistical and Nonlinear Physics 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Dipartimento di Scienza Applicata e TecnologiaTorinoItaly
  2. 2.INFN, Sezione di Torino, via Pietro Giuria 1TorinoItaly
  3. 3.Human Genetics Foundation, HuGeFTorinoItaly

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