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arXiv 1105.6072hep-thgr-qcmath-phmath.MP
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任意维数下维拉索罗代数的推广

A generalization of the Virasoro algebra to arbitrary dimensions

Razvan Gurau

摘要:

有色张量模型在更高维度上推广了矩阵模型。他们承认一个1/N的膨胀占主导地位的球形拓扑结构,并表现出强烈的矩阵模型的关键行为。本文将色张量模型推广到具有一般相互作用的色张量模型,导出了大N极限下的Schwinger Dyson方程,并分析了配分函数满足首阶约束的相关代数.我们表明,限制形成李代数(索引树)产生的推广的维拉索罗代数在任意尺寸。

英文摘要:

Colored tensor models generalize matrix models in higher dimensions. They admit a 1/N expansion dominated by spherical topologies and exhibit a critical behavior strongly reminiscent of matrix models. In this paper we generalize the colored tensor models to colored models with generic interaction, derive the Schwinger Dyson equations in the large N limit and analyze the associated algebra of constraints satisfied at leading order by the partition function. We show that the constraints form a Lie algebra (indexed by trees) yielding a generalization of the Virasoro algebra in arbitrary dimensions.

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