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Type: Artigo
Title: Nonequilibrium free energy methods applied to magnetic systems: the degenerate ising model
Author: Cajahuaringa, S.
Antonelli, A.
Abstract: In this paper, we review the physical concepts of the nonequilibrium techniques for the calculation of free energies applied to magnetic systems using Monte Carlo simulations of different nonequilibrium processes. The methodology allows the calculation of the free energy difference between two different system Hamiltonians, as well as the free energy dependence on temperature and magnetic field for a given Hamiltonian. As an illustration of the effectiveness of this approach, we apply the methodologies to determine the phase diagram of a simple microscopic model, the degenerate Ising model. Our results show very good agreement with those obtained from analytical (theoretical) methods.
Subject: Energia livre
Método de Monte Carlo
Modelo de Ising
Transição de fase
Country: Estados Unidos
Editor: Springer
Rights: fechado
Identifier DOI: 10.1007/s10955-019-02267-7
Date Issue: 2019
Appears in Collections:IFGW - Artigos e Outros Documentos

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