Multicanonical Simulations Step by Step

Details Multicanonical Simulations Step by Step Multicanonical Simulations Step by Step

2002-06-18

arxiv.org/abs/cond-mat/0206333v2

Comput.Phys.Commun. 153 (2003) 397-406

Physics

Condensed Matter

Scientific paper

10.1016/S0010-4655(03)00245-5

The purpose of this article is to provide a starter kit for multicanonical simulations in statistical physics. Fortran code for the $q$-state Potts model in $d=2, 3,...$ dimensions can be downloaded from the Web and this paper describes simulation results, which are in all details reproducible by running prepared programs. To allow for comparison with exact results, the internal energy, the specific heat, the free energy and the entropy are calculated for the $d=2$ Ising ($q=2$) and the $q=10$ Potts model. % in a temperature range from $T=\infty$ down to sufficiently low % temperatures, such that the groundstates are included in the sampling. Analysis programs, relying on an all-log jackknife technique, which is suitable for handling sums of very large numbers, are introduced to calculate our final estimators.

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