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arXiv 1111.6905hep-th
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压缩3-球面上N = 2理论的因式分解

Factorisation of N = 2 theories on the squashed 3-sphere

Sara Pasquetti

摘要:

最近已证明,N=2理论的配分函数在压缩3-球面上局部化为矩阵积分。通过显式地评估矩阵积分,我们表明,阿贝尔配分函数可以表示为两个块的产品之和。我们用涡旋理论的配分函数来确定第一块,其中等变参数hbar=2 Pi i b^2,定义在R^2 x S_1上,对应于椭球的b->0退化。第二块给出了在对偶R^2 x S_1上对应于1/b ->0退化的具有等变参数hbar^L=2 Pi i/b^2的涡旋理论的配分函数。椭球分区似乎提供了涡旋理论的hbar -> hbar^L模不变非微扰完备性。

英文摘要:

Partition functions of N=2 theories on the squashed 3-sphere have been recently shown to localise to matrix integrals. By explicitly evaluating the matrix integral we show that abelian partition functions can be expressed as a sum of products of two blocks. We identify the first block with the partition function of the vortex theory, with equivariant parameter hbar=2 Pi i b^2, defined on R^2 x S_1 corresponding to the b->0 degeneration of the ellipsoid. The second block gives the partition function of the vortex theory with equivariant parameter hbar^L=2 Pi i/b^2, on the dual R^2 x S_1 corresponding to the 1/b ->0 degeneration. The ellipsoid partition appears to provide the hbar -> hbar^L modular invariant non-perturbative completion of the vortex theory.

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