Archivio Istituzionale della RicercaWe 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.
Variational approximations for stationary states of Ising-like models / Pelizzola, Alessandro. - In: THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS. - ISSN 1434-6028. - 86:(2013), pp. 120-1-120-8. [10.1140/epjb/e2013-40031-6]
Variational approximations for stationary states of Ising-like models
PELIZZOLA, ALESSANDRO
2013
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.
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https://hdl.handle.net/11583/2506421
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