Boundaries & localisation with a topological twist

Abstract We study the partition functions of topologically twisted 3d N $$ \mathcal{N} $$ = 2 gauge theories on a hemisphere spacetime with boundary HS 2 × S 1. We show that the partition function may be localised to either the Higgs branch or the Coulomb branch where the contributions to the path i...

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Main Authors: Samuel Crew, Daniel Zhang, Boan Zhao
Format: Article
Language:English
Published: SpringerOpen 2023-10-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP10(2023)093
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author Samuel Crew
Daniel Zhang
Boan Zhao
author_facet Samuel Crew
Daniel Zhang
Boan Zhao
author_sort Samuel Crew
collection DOAJ
description Abstract We study the partition functions of topologically twisted 3d N $$ \mathcal{N} $$ = 2 gauge theories on a hemisphere spacetime with boundary HS 2 × S 1. We show that the partition function may be localised to either the Higgs branch or the Coulomb branch where the contributions to the path integral are vortex or monopole configurations respectively. Turning to N $$ \mathcal{N} $$ = 4 supersymmetry, we consider partition functions for exceptional Dirichlet boundary conditions that yield a complete set of ‘IR holomorphic blocks’. We demonstrate that these correspond to vertex functions: equivariant Euler characteristics of quasimap moduli spaces. In this context, we explore the geometric interpretation of both the Higgs and Coulomb branch localisation schemes in terms of the enumerative geometry of quasimaps and discuss the action of mirror symmetry.
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spelling doaj.art-c87e5af150f34ef0b755c2c7af8ebf422024-01-28T12:19:37ZengSpringerOpenJournal of High Energy Physics1029-84792023-10-0120231014610.1007/JHEP10(2023)093Boundaries & localisation with a topological twistSamuel Crew0Daniel Zhang1Boan Zhao2Faculty of Computer Science, Ruhr University BochumSt John’s College, University of OxfordDAMTP, Centre for Mathematical Sciences, University of CambridgeAbstract We study the partition functions of topologically twisted 3d N $$ \mathcal{N} $$ = 2 gauge theories on a hemisphere spacetime with boundary HS 2 × S 1. We show that the partition function may be localised to either the Higgs branch or the Coulomb branch where the contributions to the path integral are vortex or monopole configurations respectively. Turning to N $$ \mathcal{N} $$ = 4 supersymmetry, we consider partition functions for exceptional Dirichlet boundary conditions that yield a complete set of ‘IR holomorphic blocks’. We demonstrate that these correspond to vertex functions: equivariant Euler characteristics of quasimap moduli spaces. In this context, we explore the geometric interpretation of both the Higgs and Coulomb branch localisation schemes in terms of the enumerative geometry of quasimaps and discuss the action of mirror symmetry.https://doi.org/10.1007/JHEP10(2023)093Supersymmetric Gauge TheoryDifferential and Algebraic GeometrySolitons Monopoles and Instantons
spellingShingle Samuel Crew
Daniel Zhang
Boan Zhao
Boundaries & localisation with a topological twist
Journal of High Energy Physics
Supersymmetric Gauge Theory
Differential and Algebraic Geometry
Solitons Monopoles and Instantons
title Boundaries & localisation with a topological twist
title_full Boundaries & localisation with a topological twist
title_fullStr Boundaries & localisation with a topological twist
title_full_unstemmed Boundaries & localisation with a topological twist
title_short Boundaries & localisation with a topological twist
title_sort boundaries localisation with a topological twist
topic Supersymmetric Gauge Theory
Differential and Algebraic Geometry
Solitons Monopoles and Instantons
url https://doi.org/10.1007/JHEP10(2023)093
work_keys_str_mv AT samuelcrew boundarieslocalisationwithatopologicaltwist
AT danielzhang boundarieslocalisationwithatopologicaltwist
AT boanzhao boundarieslocalisationwithatopologicaltwist