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arXiv 1603.06207hep-thmath-phmath.MP
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4dN =2和5dN =1理论中微扰级数的Borel可和性

Borel summability of perturbative series in 4d N=2 and 5d N=1 theories

Masazumi Honda

摘要:

本文用拉格朗日量研究了4dN =2和5dN =1超对称规范理论中的弱耦合微扰级数。我们证明了这些理论在零瞬子扇区中的微扰级数对各种观测量都是Borel可和的。我们对4d $\mathcal{N}=2$情形的结果支持了最近提出的在类QCD理论中实现红外重整子的半经典解的设想,其中在N=2理论中不存在半经典解,并且微扰级数是明确的,即Borel可和的.我们还证明了在任意数目的瞬子扇区的微扰级数是Borel可和的广泛的一类理论。事实证明,精确的结果可以通过在每一个瞬子扇区的数量上对Borel迭代求和来获得。

英文摘要:

We study weak coupling perturbative series in 4d N=2 and 5d N=1 supersymmetric gauge theories with Lagrangians. We prove that the perturbative series of these theories in zero instanton sector are Borel summable for various observables. Our result for 4d $\mathcal{N}=2$ case supports an expectation from a recent proposal on a semiclassical realization of infrared renormalons in QCD-like theories, where the semiclassical solution does not exist in N=2 theories and the perturbative series are unambiguous, namely Borel summable. We also prove that the perturbative series in arbitrary number of instanton sector are Borel summable for a wide class of theories. It turns out that exact results can be obtained by summing over the Borel resummations in each number of instanton sector.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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