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Showing 1 to 1 of 1 for “"Callan-Rubakov Effect"”.
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Conformal Boundaries, SPTs, and the Monopole-Fermion Problem
… reduces to defining boundary states for an effective 2d theory of Dirac fermions with certain chiral symmetries. For this to be possible, various 2d anomalies must vanish, which places constraints on the matter content of the 4d gauge theory. Next, to obtain the boundary states, we turn to …