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Work distributions for Ising chains in a time-dependent magnetic field

Mario Einax and Philipp Maass
Phys. Rev. E 80, 020101(R) – Published 17 August 2009

Abstract

Master equations can be conveniently used to investigate many particle systems driven out of equilibrium by time-dependent external fields. This topic is of vital interest in connection with fluctuation theorems and the associated microscopic work and heat distributions. We present an exact Monte Carlo simulation algorithm, which allows us to study interaction effects on these distributions. The method is applied to an Ising chain with Glauber dynamics. We find that the distributions are characterized by δ and step functions with a smooth part in between. With decreasing sweeping rate of the external field or decreasing interaction strength, the singular part becomes less dominant and the Gaussian fluctuation regime is approached.

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  • Received 24 June 2009

DOI:https://doi.org/10.1103/PhysRevE.80.020101

©2009 American Physical Society

Authors & Affiliations

Mario Einax1 and Philipp Maass2

  • 1Institut für Physik, Technische Universität Ilmenau, 98684 Ilmenau, Germany
  • 2Fachbereich Physik, Universität Osnabrück, Barbarastraße 7, 49069 Osnabrück, Germany

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Issue

Vol. 80, Iss. 2 — August 2009

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