Enhancing Monte Carlo methods by using a generalized fluctuation theory

Details Enhancing Monte Carlo methods by using a generalized fluctuation theory Enhancing Monte Carlo methods by using a generalized fluctuation theory

2006-12-29

arxiv.org/abs/cond-mat/0612683v1

Physics

Condensed Matter

Statistical Mechanics

RevTex4 style. 4 pages, 1 eps figure

Scientific paper

According to the recently obtained thermodynamic uncertainty relation, the microcanonical regions with a negative heat capacity can be accessed within a canonical-like description by using a thermostat with a fluctuating inverse temperature. This far-reaching conclusion is used in this Letter for enhancing the potentialities of the well-known Swendsen-Wang cluster algorithm in order to access to the anomalous microcanonical states of the q=10 state Potts model on a square lattice, which exhibits a first-order phase transition in its thermodynamical description.

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