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arXiv 2012.11843hep-th
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四维$SU(N)$ $\mathcal{N} = 2$规范理论多单极点的再讨论

Revisiting the Multi-Monopole Point of $SU(N)$ $\mathcal{N} = 2$ Gauge Theory in Four Dimensions

Eric D'Hoker, Thomas T. Dumitrescu, Efrat Gerchkovitz, Emily Nardoni

摘要:

受软超对称破缺应用的启发,我们重新讨论了四维纯$SU(N)$ $\mathcal{N}=2$规范理论库仑分支上的多点附近的Seiberg-Witten解的展开。在这一点上,$N-1$相互局域的磁单极子同时变得无质量,在适当的对偶框架中,规范耦合在热力学上趋于零。我们明确地计算出领先的阈值校正,这个对数运行从赛伯格-威滕解决方案,通过调整以前介绍的方法由D 'Hoker和Phong。我们将我们的计算与文献中现有的结果进行比较,这包括特定于$SU(2)$和$SU(3)$规范理论的结果,Douglas和Shenker的大$N$结果,以及通过呼吁可积系统或拓扑弦得到的结果。我们找到了广泛的一致意见,同时也澄清了一些挥之不去的不一致。最后,我们显式地将Douglas和Shenker的结果推广到有限的$N$,发现与我们的第一个计算完全一致。

英文摘要:

Motivated by applications to soft supersymmetry breaking, we revisit the expansion of the Seiberg-Witten solution around the multi-monopole point on the Coulomb branch of pure $SU(N)$ $\mathcal{N}=2$ gauge theory in four dimensions. At this point $N-1$ mutually local magnetic monopoles become massless simultaneously, and in a suitable duality frame the gauge couplings logarithmically run to zero. We explicitly calculate the leading threshold corrections to this logarithmic running from the Seiberg-Witten solution by adapting a method previously introduced by D'Hoker and Phong. We compare our computation to existing results in the literature; this includes results specific to $SU(2)$ and $SU(3)$ gauge theories, the large-$N$ results of Douglas and Shenker, as well as results obtained by appealing to integrable systems or topological strings. We find broad agreement, while also clarifying some lingering inconsistencies. Finally, we explicitly extend the results of Douglas and Shenker to finite $N$, finding exact agreement with our first calculation.

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