Universality and phase diagrams of the Baxter-Wu Model in a Crystal Field: spin-1 and spin-3/2

D. A. Dias, J. C. Xavier, J. A. Plascak
2017 Journal of Physics, Conference Series  
Conventional finite-size scaling and conformal invariance theory are used in order to study the critical behavior of the spin-1 and spin-3/2 Baxter-Wu model. For spin-1 the results are similar to the Blume-Capel model. However, for spin-3/2, the phase diagram is much richer, and presents, besides a pentacritical point, an additional multicritical endpoint. In both cases, the universality class is the same as the spin-1/2 model, even at the multicritical points.
doi:10.1088/1742-6596/921/1/012003 fatcat:qzcnj3ghrnbcnmdd6mtbd6uru4