  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.
