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arXiv 1012.3454hep-thcond-mat.othermath-phmath.MP
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gl(n)的弦假设|m)自旋链:粒子/空穴民主

String hypothesis for gl(n|m) spin chains: a particle/hole democracy

Dmytro Volin

摘要:

本文研究了可积gl(n| m)自旋链,它允许形成弦假设。考虑到这种自旋链的热力学极限,我们推导出了线性泛函方程,其中包括空穴和粒子。函数方程自然地将不同类型的激励组织成与Y系统的模式等效的模式,并且,毫不奇怪,Y系统可以容易地从函数方程导出。已知Y系统包含关于模型对称性的大部分信息,因此我们将对称性知识直接映射到弦激发的描述。我们的分析是适用于最高权表示,对于某些选择的Kac-Dynkin图只有一个非零Dynkin标签。这推广了AdS/CFT谱问题和哈伯德模型的已知结果。

英文摘要:

This paper is devoted to integrable gl(n|m) spin chains which allow for formulation of the string hypothesis. Considering the thermodynamic limit of such spin chains, we derive linear functional equations that symmetricaly treat holes and particles. The functional equations naturally organize different types of excitations into a pattern equivalent to the one of Y-system, and, not surprisingly, the Y-system can be easily derived from the functional equations. The Y-system is known to contain most of the information about the symmetry of the model, therefore we map the symmetry knowledge directly to the description of string excitations. Our analysis is applicable for highest weight representations which for some choice of the Kac-Dynkin diagram have only one nonzero Dynkin label. This generalizes known results for the AdS/CFT spectral problem and for the Hubbard model.

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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