Monte Carlo Twist Method Applied to the Two-Dimensional Ising Antiferromagnets in Magnetic Fields : Tests of the Method and Critical-Point Amplitudes
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概要
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We apply our Monte Carlo twist method to the antiferromagnetic Ising model on square lattices in several uniform fields imposing fixed boundary conditions. We have estimated the critical temperature T_c and critical exponent v at each field. The former well agree with the analytic results of Muller-Hartmann and Zittartz, and the latter are all close to v=1. We have calculated the finite-size critical-point amplitude of the interfacial free energy Ξ_0 which is believed to be universal. Our estimate of Ξ_0 at zero field is in good agreement with the analytic result of Abraham and Svrakic. We also report for the first time estimates of Ξ_0 at finite fields. Further, comparison is made with results of Mon and Jasnow.
- 社団法人日本物理学会の論文
- 1993-03-15
著者
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Ueno Y
Tokyo Inst. Technology Tokyo Jpn
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Shioda H
Department Of Physics Tokyo Institute Of Technology
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Shioda Hideo
Department Of Physics Tokyo Institute Of Technology
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Ueno Yohtaro
Department Of Physics Tokyo Institute Of Technogy
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