arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.04349hep-thcond-mat.stat-mechcond-mat.str-el
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具有弱耦合弦论对偶的三维伊辛模型

Toward a 3d Ising model with a weakly-coupled string theory dual

Nabil Iqbal, John McGreevy

摘要:

长期以来,人们一直认为三维伊辛模型可以被看作是一种弦论,在这种理论中,人们把把上自旋和下自旋分开的畴壁解释为二维弦世界面。通常的伊辛哈密顿量测量这些畴壁的面积。这个理论具有单位量级的弦耦合。我们添加新的本地条款的伊辛哈密顿量,进一步加权每个自旋配置的一个因素取决于相应的域壁的属,从而在一个新的三维伊辛模型,具有可调裸弦耦合$g_s$。我们使用解析和数值相结合的方法来分析该模型的相位结构作为$g_s$是不同的。我们研究的统计性质的拓扑结构的世界单,并讨论了使用这种新的变形在弱弦耦合,找到一个世界单描述的3D伊辛过渡的前景。

英文摘要:

It has long been expected that the 3d Ising model can be thought of as a string theory, where one interprets the domain walls that separate up spins from down spins as two-dimensional string worldsheets. The usual Ising Hamiltonian measures the area of these domain walls. This theory has string coupling of unit magnitude. We add new local terms to the Ising Hamiltonian that further weight each spin configuration by a factor depending on the genus of the corresponding domain wall, resulting in a new 3d Ising model that has a tunable bare string coupling $g_s$. We use a combination of analytical and numerical methods to analyze the phase structure of this model as $g_s$ is varied. We study statistical properties of the topology of worldsheets and discuss the prospects of using this new deformation at weak string coupling to find a worldsheet description of the 3d Ising transition.

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。

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