Abstract
We discuss possible vacuum structures of SU(n) × SU(n) gauge theories with bifundamental matters at finite θ angles. In order to give a precise constraint, a mixed ’t Hooft anomaly is studied in detail by gauging the center ℤ n one-form symmetry of the bifundamental gauge theory. We propose phase diagrams that are consistent with the con-straints, and also give a heuristic explanation of the result based on the dual superconductor scenario of confinement.
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Tanizaki, Y., Kikuchi, Y. Vacuum structure of bifundamental gauge theories at finite topological angles. J. High Energ. Phys. 2017, 102 (2017). https://doi.org/10.1007/JHEP06(2017)102
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DOI: https://doi.org/10.1007/JHEP06(2017)102