arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1104.3224cond-mat.stat-mech
收藏

三维双角面伊辛模型

The Dual Gonihedric 3D Ising Model

D. A. Johnston, R. P. K. C. M. Ranasinghe

摘要:

本文研究了三维立方晶格上kappa=0的Gonihedric伊辛模型的对偶,它可以写成各向异性耦合的Ashkin-Teller模型.原始kappa=0的角面体模型具有纯元格相互作用,显示一级跃迁,并具有高度简并的基态。我们发现,由于各向异性耦合,对偶模型也存在类似的大基态简并,并研究了单立方体模型的耦合平均场方程。我们还进行了蒙特卡罗模拟,确认一阶相变的模型,并建议,基态简并持续整个低温阶段。一些探索性的冷却模拟也暗示了非平凡的动力学行为。

英文摘要:

We investigate the dual of the kappa=0 Gonihedric Ising model on a 3D cubic lattice, which may be written as an anisotropically coupled Ashkin-Teller model. The original kappa=0 Gonihedric model has a purely plaquette interaction, displays a first order transition and possesses a highly degenerate ground state. We find that the dual model admits a similar large ground state degeneracy as a result of the anisotropic couplings and investigate the coupled mean field equations for the model on a single cube. We also carry out Monte Carlo simulations which confirm a first order phase transition in the model and suggest that the ground state degeneracy persists throughout the low temperature phase. Some exploratory cooling simulations also hint at non-trivial dynamical behaviour.

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。

↑