## "Topological defect lines and RG flows in 2D"

**Speaker:**Xi Yin, Harvard University

**When:**February 6, 2018 (Tue), 02:00PM to 03:00PM (add to my calendar)

**Location:**PRB 595

*This event is part of the HET Seminar Series. *

Topological defect lines in 2D generalize both global symmetries and Verlinde lines, and provide models of fusion categories without braiding. I will discuss their roles in CFTs and in constraining RG flows, and use them to determine the infrared (fully extended) topological quantum field theory in some examples of massive flows.