期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 9, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP09(2012)091
关键词
Supersymmetric gauge theory; Supersymmetry and Duality; Chern-Simons Theories; Anomalies in Field and String Theories
资金
- Direct For Mathematical & Physical Scien [969448] Funding Source: National Science Foundation
- Division Of Physics [969448] Funding Source: National Science Foundation
We study contact terms of conserved currents and the energy-momentum tensor in three-dimensional quantum field theory. They are associated with Chern-Simons terms for background fields. While the integer parts of these contact terms are ambiguous, their fractional parts are meaningful physical observables. In N = 2 supersymmetric theories with a U(1)(R) symmetry some of these observables lead to an anomaly. Moreover, they can be computed exactly using localization, leading to new tests of dualities.
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