Logarithmic corrections and universal amplitude ratios in the 4-state Potts model

Abstract

Monte Carlo and series expansion data for the energy, specific heat, magnetisation and susceptibility of the 4-state Potts model in the vicinity of the critical point are analysed. The role of logarithmic corrections is discussed. Estimates of universal ratios A_+/A_-, ${\Gamma }_{+}/{\Gamma }_L$, ${\Gamma }_T/{\Gamma }_L$ and R_c^+ are given.

arXiv commentto be published in Computer Simulation Studies in Condensed-Matter Physics XX, eds. D.P. Landau, S.P. Lewis, H.-B. Schüttler