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Defects and Bulk Perturbations of Boundary Landau-Ginzburg Orbifolds
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We propose defect lines as a useful tool to study bulk perturbations of conformal field theories, in particular to analyse the induced renormalisation group flows of boundary conditions. As a concrete example we investigate bulk perturbations of N=2 supersymmetric minimal models. To these perturbations we associate a special class of defects between the respective UV and IR theories, whose fusion with boundary conditions indeed reproduces the behaviour of the latter under the corresponding RG flows. v2: Some explanations added in section 4, minor changes.
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Cited by 11 Pith papers
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Non-invertible so(3)_k defect lines that commute with the massless perturbation of N=2 minimal models are killed at second order by a supersymmetry anomaly, while the Chebyshev massive deformation preserves them to al...
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New classes of boundary and coupled conformal field theories are constructed from Z_N gauging, with a proposed dictionary to topological order, nonchiral anyons, and domain walls.
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