Critical behavior of the spin-$1/2$ Baxter-Wu model: Entropic sampling simulations
| Autor: | Jorge, L. N., Ferreira, L. S., Leão, S. A., Caparica, A. A. |
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| Rok vydání: | 2015 |
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| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/s13538-016-0439-y |
| Popis: | In this work we use a refined entropic sampling technique based on the Wang-Landau method to study the spin-$1/2$ Baxter-Wu model. The static critical exponents were determined as $\alpha=0.6545(68)$, $\beta=0.0818(30)$, $\gamma=1.18193(77)$, and $\nu=0.66341(47)$. The estimate for the critical temperature was $T_c=2.269194(45)$. We compare the present results with those obtained from other well established approaches and we find a startling closeness with the exact values, besides the high precision reached for the critical temperature. We also calculate the coefficients $a$ and $b$ for the divergence of the microcanonical inverse temperature at the ground state achieving an excellent agreement in comparison with the simulation estimates. Comment: arXiv admin note: substantial text overlap with arXiv:1501.03708 |
| Databáze: | arXiv |
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