Cluster dynamics for first-order phase transitions in the Potts model

Abstract

An algorithm for Monte Carlo simulations is proposed in which the parameter controlling the strength of the transition becomes a dynamical variable and in which efficient transitions are achieved by cluster steps. It allows to avoid the strongly suppressed tunneling between the phases by travelling easily via the second order region. Numerical results for the Potts model are presented which demonstrate the advantages of the method.

Comments: 11 pages (latex), 3 figures (not included)