2013/09/30 by Ilka Brunner, Nils Carqueville, Daniel Plencner
Mathematics · Physics and Astronomy · #hep-th #math-ph #math.MP #math.QA
published as Proceedings of Symposia in Pure Mathematics 88 (2014), 231-241 · 11 pages, contribution to the String-Math 2013 proceedings
arxiv created 2013/09/30 · arxiv updated 2018/09/06
We provide a lightning review of the construction of (generalised) orbifolds [arXiv:0909.5013, arXiv:1210.6363] of two-dimensional quantum field theories in terms of topological defects, along the lines of [arXiv:1307.3141]. This universal perspective has many applications, some of which we sketch in the examples of 2d Yang-Mills theory, Landau-Ginzburg models, and rational CFT.