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arXiv 0911.2828cond-mat.stat-mechcond-mat.str-el
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三维经典O(N)自旋冰非常规库仑-晶体相变的常规描述

Conventional description of Unconventional Coulomb-Crystal phase transitions in three-dimensional classical O(N) spin-ice

Cenke Xu

摘要:

在三维经典O(N)自旋冰模型中,研究了高温库仑相与低温交错晶相之间的相变。由于O(N)模型和二聚体模型之间的根本区别,本文基于约束序参量的描述比经典二聚体模型的CP(1)描述更为传统.利用系统的量子力学和1/N展开研究了相变的普适类,并在足够大的N下找到了一个稳定的不动点。

英文摘要:

We study the phase transition between the high temperature Coulomb phase and the low temperature staggered crystal phase in three dimensional classical O(N) spin-ice model. Compared with the previously proposed CP(1) formalism on the Coulomb-crystal transition of the classical dimer model, our description based on constrained order parameter is more conventional, due to a fundamental difference between the O(N) and the dimer model. A systematic epsilon and 1/N expansion are used to study the universality class of the phase transition, and a stable fixed point is found based on our calculations for large enough N.

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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