Exploring the strong-coupling region of SU(N) Seiberg-Witten theory

Exploring the strong-coupling region of SU(N) Seiberg-Witten theory
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探索 SU(N) Seiberg-Witten 理论的强耦合区域

DOI:
10.1007/jhep11(2022)102
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发表时间:
2022
影响因子:
5.4
通讯作者:
Nardoni, Emily
Nardoni, Emily
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
D’Hoker, Eric;Dumitrescu, Thomas T.;Nardoni, Emily

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本文考虑四维纯= 2规范理论的Seiberg-Witten解,规范群为SU(N)。在库仑分支的n = 2N对称点附近,得到了2(N− 1)个Seiberg-Witten周期aI(u),aDI(u)对N− 1个库仑分支模un的依赖关系的一个简单的精确级数展开式,其中所有un为零.这推广了N= 2的超几何函数和N= 3的Appell函数的早期结果。利用这些和其他的分析结果,结合数值计算,我们探索的整体结构的Kähler势K=Im(I a DI),这是单值的库仑分支。证明了K是一个凸函数,在n = 2N-对称点有唯一的极小值。最后,我们探讨了在这一点附近的边缘稳定的候选墙,以及它们与消失的Kähler势的表面的关系。
We consider the Seiberg-Witten solution of pure= 2 gauge theory in four dimensions, with gauge group SU (N). A simple exact series expansion for the dependence of the 2 (N− 1) Seiberg-Witten periods a I (u), a DI (u) on the N− 1 Coulomb-branch moduli u n is obtained around the ℤ 2N-symmetric point of the Coulomb branch, where all u n vanish. This generalizes earlier results for N= 2 in terms of hypergeometric functions, and for N= 3 in terms of Appell functions. Using these and other analytical results, combined with numerical computations, we explore the global structure of the Kähler potential K=Im (I a DI), which is single valued on the Coulomb branch. Evidence is presented that K is a convex function, with a unique minimum at the ℤ 2N-symmetric point. Finally, we explore candidate walls of marginal stability in the vicinity of this point, and their relation to the surface of vanishing Kähler potential.
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