Critical Behavior of the Spin-1/2 Baxter-Wu Model: Entropic Sampling Simulations

被引：10
|
作者：
Jorge, L. N. [1 ,2 ]
Ferreira, L. S. [2 ]
Leao, S. A. [2 ]
Caparica, A. A. [2 ]
机构：
[1] Inst Fed Mato Grosso, Campus Caceres,Ave Ramires S-N, BR-78200000 Caceres, MT, Brazil
[2] Univ Fed Goias, Inst Fis, Ave Esperanca S-N, BR-74690900 Goiania, Go, Brazil
来源：
BRAZILIAN JOURNAL OF PHYSICS | 2016年 / 46卷 / 05期
关键词：
Entropic sampling; Baxter-Wu model; Critical exponents; Critical temperature; 1ST-ORDER PHASE-TRANSITIONS; STATIC CRITICAL-BEHAVIOR; MONTE-CARLO SIMULATIONS; ISING-MODEL; POTTS-MODEL; QUENCHED IMPURITIES; 3-SPIN INTERACTIONS; TRIANGULAR LATTICE; MAGNETIC-FIELD; ALGORITHM;
D O I：
10.1007/s13538-016-0439-y
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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. We adopt the total magnetization as the order parameter and, as a result, do not divide the system into three sub-lattices. The static critical exponents were determined as alpha = 0.6697(54), beta = 0.0813(67), gamma = 1.1772(33), and nu = 0.6574(61). The estimate for the critical temperature was T (c) = 2.26924(2). We compare the present results with those obtained from other well-established approaches, and we find a very good closeness with the exact values, besides the high precision reached for the critical temperature.
引用
收藏
页码：556 / 564
页数：9
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