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arXiv 0909.4031hep-thmath-phmath.MP
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Hitchin系统、N=2规范理论和W-引力

Hitchin systems, N=2 gauge theories and W-gravity

Giulio Bonelli, Alessandro Tanzini

摘要:

我们提出了一些论据,支持最近发现的Alday,Gaiotto和Tachikawa之间的二维共形场论和N=2超共形规范理论在四维的对偶M-理论推导。我们发现A_{N-1} Toda场论是最简单的二维共形场论,它量子化了N个包裹在Riemann曲面上的M5-膜的模.这使我们确定手征运营商的N=2规范理论与W-代数电流。作为这种对应的检查,我们研究了一些相关的OPE的获得Nekrasov的配分函数满足W-几何约束。

英文摘要:

We propose some arguments supporting an M-theory derivation of the duality recently discovered by Alday, Gaiotto and Tachikawa between two-dimensional conformal field theories and N=2 superconformal gauge theories in four dimensions. We find that A_{N-1} Toda field theory is the simplest two-dimensional conformal field theory quantizing the moduli of N M5-branes wrapped on a Riemann surface. This leads us to identify chiral operators of the N=2 gauge theories with W-algebra currents. As a check of this correspondence we study some relevant OPE's obtaining that Nekrasov's partition function satisfies W-geometry constraints.

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