Monte Carlo simulation of spin models with long-range interactions

Details Monte Carlo simulation of spin models with long-range interactions Monte Carlo simulation of spin models with long-range interactions

1999-06-15

arxiv.org/abs/cond-mat/9906219v1

Physics

Condensed Matter

Statistical Mechanics

14 pages + 4 PostScript figures. To appear in Computer Simulation Studies in Condensed Matter Physics XII, edited by D. P. Lan

Scientific paper

An efficient Monte Carlo algorithm for the simulation of spin models with long-range interactions is discussed. Its central feature is that the number of operations required to flip a spin is independent of the number of interactions between this spin and the other spins in the system. In addition, critical slowing down is strongly suppressed. In order to illustrate the range of applicability of the algorithm, two specific examples are presented. First, some aspects of the Kosterlitz--Thouless transition in the one-dimensional Ising chain with inverse-square interactions are calculated. Secondly, the crossover from Ising-like to classical critical behavior in two-dimensional systems is studied for several different interaction profiles.

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