Normalized entropy density of the 3D 3-state Potts model

Abstract

Using a multicanonical Metropolis algorithm we have performed Monte Carlo simulations of the 3D 3-state Potts model on $L^3$ lattices with L=20, 30, 40, 50. Covering a range of inverse temperatures from ${\beta }_{\min }=0$ to ${\beta }_{\max }=0.33$ we calculated the infinite volume limit of the entropy density $s(\beta )$ with its normalization obtained from $s(0)=\ln 3$. At the transition temperature the entropy and energy endpoints in the ordered and disordered phase are estimated employing a novel reweighting procedure. We also evaluate the transition temperature and the order-disorder interface tension. The latter estimate increases when capillary waves are taken into account.

5 pages, 4 figures

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