Speaker:

Alex Kovner

University Of Connecticut, USA

Abstract:

We show that instantons. although usually considered irreevant at high temperature, give the leading contribution to the splitting between the scalar and pseudoscalar correlation lengths. We calculate the splitting due to instanton-antiinstanton chains and show that it vanishes at asymptotically high teperatures as a power of the emperature.

Place and time:

Physics Department meeting room, 2nd floor

21 July 2010, 14:30