Abstract
We study the question of universality in the two-dimensional spin-1 Baxter-Wu model in the presence of a crystal field Δ. We employ extensive numerical simulations of two types, providing us with complementary results: Wang-Landau sampling at fixed values of Δ and a parallelized variant of the multicanonical approach performed at constant temperature T. A detailed finite-size scaling analysis in the regime of second-order phase transitions in the (Δ,T) phase diagram indicates that the transition belongs to the universality class of the four-state Potts model. Previous controversies with respect to the nature of the transition are discussed and attributed to the presence of strong finite-size effects, especially as one approaches the pentacritical point of the model.
| Original language | English |
|---|---|
| Article number | 054143 |
| Pages (from-to) | (In-Press) |
| Number of pages | 10 |
| Journal | Physical Review E |
| Volume | 105 |
| Issue number | 5 |
| Early online date | 25 May 2022 |
| DOIs | |
| Publication status | Published - May 2022 |
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ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Statistics and Probability
- Condensed Matter Physics