MS Seminar (Mathematics - String Theory)

Speaker: Yuya Tanizaki (RIKEN BNL)
Title: Discrete 't Hooft anomaly of QCD and constraints on chiral symmetry breaking
Date: Tue, Oct 02, 2018, 13:15 - 14:30
Place: Seminar Room A
Abstract: Anomaly matching gives a constraint on possible dynamics of strongly coupled QFTs. We find a discrete 't Hooft anomaly of QCD with massless quarks, and discuss it's physical meaning. In the ordinary chiral broken phase, we show that anomaly matching is satisfied because of the anomalous violation of Skyrmion number conservation under background gauge fields. Using these knowledge, we give the no-go theorem on the exotic chiral broken phase, proposed by Stern about two decades ago.
Remarks: Blackboard talk