Realizing IR theories by projections in the UV
arXiv:1907.12339 · doi:10.1007/JHEP01(2020)097
Abstract
We study bulk RG flows in the context of TQFTs and show how IR theories can be entirely represented within the respective UV theories by means of codimension-one projection defects. What is more, RG flows of the bulk theory can be described in terms of RG flows of the codimension-one identity defect in the fixed UV bulk theory. We illustrate this in the example of RG flows between Landau-Ginzburg orbifold models, for which the respective defects can be described in terms of matrix factorizations.
v2: 62 pages, minor changes