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arXiv 1507.07709hep-th
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N=2* 理论中的S-对偶与预势(I):ADE代数

S-duality and the prepotential in N=2* theories (I): the ADE algebras

M. Billo, M. Frau, F. Fucito, A. Lerda, J. F. Morales

摘要:

在Ω背景下,具有么正规范群的N=2* 超对称理论的前势满足一个模反常方程,该方程可以在小质量展开式中逐阶递归求解.通过要求S-对偶作用于预势作为傅立叶变换,我们将这一结果推广到N=2* 理论与规范代数的D和E型,并表明其预势可以写在SL(2,Z)的准模形式。检查的结果对微观多瞬子演算的基础上本地化的A和D系列和再现已知的1-瞬子前势的纯N=2理论的任何规范群的ADE型。我们的结果也可以用来获得多瞬子项的特殊理论,微观瞬子演算和ADHM建设是不可用的。

英文摘要:

The prepotential of N=2* supersymmetric theories with unitary gauge groups in an Omega-background satisfies a modular anomaly equation that can be recursively solved order by order in an expansion for small mass. By requiring that S-duality acts on the prepotential as a Fourier transform we generalise this result to N=2* theories with gauge algebras of the D and E type and show that their prepotentials can be written in terms of quasi-modular forms of SL(2,Z). The results are checked against microscopic multi-instanton calculus based on localization for the A and D series and reproduce the known 1-instanton prepotential of the pure N=2 theories for any gauge group of ADE type. Our results can also be used to obtain the multi-instanton terms in the exceptional theories for which the microscopic instanton calculus and the ADHM construction are not available.

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