Seminar series
Date
Mon, 18 May 2020
15:45
15:45
Location
Virtual
Speaker
Dan Freed
Organisation
University of Texas at Austin
Just as differential equations often boundary conditions of various types, so too do quantum field theories often admit boundary theories. I will explain these notions and then discuss a theorem proved with Constantin Teleman, essentially characterizing certain 3-dimensional topological field theories which admit nonzero boundary theories. One application is to gapped systems in condensed matter physics.