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arXiv 1111.2803hep-thmath-phmath.MPmath.QAmath.RT
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陪集共形场论中的瞬子模空间和基

Instanton moduli spaces and bases in coset conformal field theory

A. A. Belavin, M. A. Bershtein, B. L. Feigin, A. V. Litvinov, G. M. Tarnopolsky

摘要:

最近提出的二维共形场论与四维超对称规范理论之间的关系预言了CFT中局域场空间中区别基的存在。该基具有许多显著的性质,其中之一是算子乘积展开系数的完全因式分解。我们考虑了C^2/Z_p上U(r)规范理论的一个特例,它对应于某个陪集共形场论,并描述了这个基的性质.我们证明了在p=2,r=2的情况下存在不同的基.我们给出了一个明确的建设其中之一。对于另一个基,我们提出了矩阵元素的公式。

英文摘要:

Recently proposed relation between conformal field theories in two dimensions and supersymmetric gauge theories in four dimensions predicts the existence of the distinguished basis in the space of local fields in CFT. This basis has a number of remarkable properties, one of them is the complete factorization of the coefficients of the operator product expansion. We consider a particular case of the U(r) gauge theory on C^2/Z_p which corresponds to a certain coset conformal field theory and describe the properties of this basis. We argue that in the case p=2, r=2 there exist different bases. We give an explicit construction of one of them. For another basis we propose the formula for matrix elements.

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