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arXiv 0802.3662hep-th
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全纯映射与二维SU(N)Yang-Mills的完全1/N展开

Holomorphic maps and the complete 1/N expansion of 2D SU(N) Yang-Mills

Yusuke Kimura, Sanjaye Ramgoolam

摘要:

利用非奇异世界片全纯映射的模空间描述了SU(N)2DYang Mills理论的完全1/N展开.这与通过从Brauer代数到对称群的映射的Gross-Taylor耦合1/N展开有关。这些结果表明,一方面来自目标黎曼曲面上带有标记的非奇异世界片的全纯映射的模空间的Euler特征标与另一个涉及具有双点(节点)的世界片的模空间的Euler特征标是相等的.

英文摘要:

We give a description of the complete 1/N expansion of SU(N) 2D Yang Mills theory in terms of the moduli space of holomorphic maps from non-singular worldsheets. This is related to the Gross-Taylor coupled 1/N expansion through a map from Brauer algebras to symmetric groups. These results point to an equality between Euler characters of moduli spaces of holomorphic maps from non-singular worldsheets with a target Riemann surface equipped with markings on the one hand and Euler characters of another moduli space involving worldsheets with double points (nodes).

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