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- W3104705501 abstract "A bstract In the context of boundary conformal field theory, we investigate whether the boundary trace anomaly can depend on marginal directions in the presence of supersymmetry. Recently, it was found that a graphene-like non-supersymmetric conformal field theory with a four-dimensional bulk photon and a three-dimensional boundary electron has two boundary central charges that depend on an exactly marginal direction, namely the gauge coupling. In this work, we supersymmetrize this theory, paying special attention to the boundary terms required by supersymmetry. We study models with 4, 8, and 16 Poincaré supercharges in the bulk, half of which are broken by the boundary. In all cases, we find that at all orders in perturbation theory, the gauge coupling is not renormalized, providing strong evidence that these theories are boundary conformal field theories. Moreover, the boundary central charges depend on the coupling. One possible exception to this dependence on marginal directions is that the difference between the two charges is coupling independent at one-loop in the maximally supersymmetric case. In our analysis, a possible boundary Chern-Simons term is incorporated by a bulk θ -term." @default.
- W3104705501 created "2020-11-23" @default.
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- W3104705501 date "2018-09-01" @default.
- W3104705501 modified "2023-10-06" @default.
- W3104705501 title "Superconformal models for graphene and boundary central charges" @default.
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- W3104705501 doi "https://doi.org/10.1007/jhep09(2018)161" @default.
- W3104705501 hasPublicationYear "2018" @default.
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