arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0809.0577cond-mat.stat-mech
收藏

二维伊辛模型中边界场诱导一级相变的数值研究

Boundary field induced first-order transition in the 2D Ising model: numerical study

Elmar Bittner, Wolfhard Janke

摘要:

在最近的一篇论文中,Mackel和Fortin [J. Phys. A.:Math.Gen.39(2006)995]提出了在二维伊辛模型中由非均匀边界磁场引起的一阶跃迁的分析研究。他们确定了将界面位于边界附近的区域与在体块内部传播的区域分开的过渡。受这些结果的启发,我们通过使用多磁模拟结合平行回火来测量界面张力,以确定相变和界面的位置。我们的结果与理论预测非常一致。此外,我们还研究了自旋-自旋关联函数,这是一个没有解析结果的函数。

英文摘要:

In a recent paper, Clusel and Fortin [J. Phys. A.: Math. Gen. 39 (2006) 995] presented an analytical study of a first-order transition induced by an inhomogeneous boundary magnetic field in the two-dimensional Ising model. They identified the transition that separates the regime where the interface is localized near the boundary from the one where it is propagating inside the bulk. Inspired by these results, we measured the interface tension by using multimagnetic simulations combined with parallel tempering to determine the phase transition and the location of the interface. Our results are in very good agreement with the theoretical predictions. Furthermore, we studied the spin-spin correlation function for which no analytical results are available.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑