Loop and surface operators in N=2 gauge theory and Liouville modular geometry

Abstract

Recently, a duality between Liouville theory and four dimensional N=2 gauge theory has been uncovered by some of the authors. We consider the role of extended objects in gauge theory, surface operators and line operators, under this correspondence. We map such objects to specific operators in Liouville theory. We employ this connection to compute the expectation value of general supersymmetric 't Hooft-Wilson line operators in a variety of N=2 gauge theories.

60 pages, 11 figures; v3: further minor corrections, published version

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• Wall-crossing, Hitchin Systems, and the WKB Approximation
• Holomorphic reduction of N=2 gauge theories, Wilson-'t Hooft operators, and S-duality
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• Wall-crossing and operator ordering for 't Hooft operators in N=2 gauge theories
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• Parallel surface defects, Hecke operators, and quantum Hitchin system
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• Donaldson-Witten theory, surface operators and mock modular forms
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• On a Canonical Quantization of 3D Anti de Sitter Pure Gravity
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