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arXiv · 2012.14225

Fusion of interfaces in Landau-Ginzburg models: a functorial approach

Nicolas Behr·Stefan Fredenhagen
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Abstract

We investigate the fusion of B-type interfaces in two-dimensional supersymmetric Landau-Ginzburg models. In particular, we propose to describe the fusion of an interface in terms of a fusion functor that acts on the category of modules of the underlying polynomial rings of chiral superfields. This uplift of a functor on the category of matrix factorisations simplifies the actual computation of interface fusion. Besides a brief discussion of minimal models, we illustrate the power of this approach in the SU(3)/U(2) Kazama-Suzuki model where we find fusion functors for a set of elementary topological defects from which all rational B-type topological defects can be generated.

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Nicolas Behr, Stefan Fredenhagen. 2020-12-28. Fusion of interfaces in Landau-Ginzburg models: a functorial approach. https://doi.org/10.1007/jhep04(2021)235

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