Critical behavior of the spin-1/2 baxter-wu model: entropic sampling simulations

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2016

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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 α = 0.6697(54), β = 0.0813(67), γ = 1.1772(33), and ν = 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.

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Entropic sampling, Baxter-Wu model, Critical exponents, Critical temperature

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JORGE, L. N. et al. Critical behavior of the spin-1/2 baxter-wu model: entropic sampling simulations. Brazilian Journal of Physics, São Paulo, v. 46, p. 556-564, 2016. DOI: 10.1007/s13538-016-0439-y. Disponível em: https://link.springer.com/article/10.1007/s13538-016-0439-y. Acesso em: 11 set. 2023.