Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 5, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP05(2022)116
Keywords
Supersymmetric Gauge Theory; Chern-Simons Theories
Categories
Funding
- EPSRC [EP/T004746/1]
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This paper investigates the contributions to the supersymmetric quantum mechanics from topological saddle points in supersymmetric localization of abelian gauge theories, providing further explanation for the twisted index of 3D N=2 gauge theories on S-1 x Sigma.
The twisted index of 3d N = 2 gauge theories on S-1 x Sigma has an algebro-geometric interpretation as the Witten index of an effective supersymmetric quantum mechanics. In this paper, we consider the contributions to the supersymmetric quantum mechanics from topological saddle points in supersymmetric localisation of abelian gauge theories. Topological saddles are configurations where the matter fields vanish and the gauge symmetry is unbroken, which exist for non-vanishing effective Chern-Simons levels. We compute the contributions to the twisted index from both topological and vortex-like saddles points and show that their combination recovers the Jeffrey-Kirwan residue prescription for the twisted index and its wall-crossing.
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