Title: Stability of two-dimensional topological insulators
Speaker: Andrea Cappelli
Date: Tuesday, May 27, 2014
Place: Seminar Room 313, Simons Center
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Abstract: Topological insulators possess non-chiral edge excitations that can interact and decay. The criteria of stability in presence of time-reversal symmetry are reviewed and put in relation with the existence of discrete anomalies. A general analysis is presented that employs conformal field theory and partition functions.