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Symmetry constraints and topological phases far from equilibrium

Event Details

Event Dates: 

Thursday, October 27, 2016 - 12:00pm

Seminar Location: 

  • Duane Physics Room G126

Speaker Name(s): 

Romain Vasseur

Speaker Affiliation(s): 

University of California, Berkeley
Seminar Type/Subject

Scientific Seminar Type: 

  • Condensed Matter Seminar

Event Details & Abstract: 

In this talk, I will describe some general constraints on the existence of many-body localized (MBL) phases in the presence of global symmetries. Based only on representation theory, I will derive some general Mermin-Wagner-type principles governing the possible fates of non-equilibrium dynamics in isolated, disordered quantum systems. In particular, I will show that MBL cannot exist in the presence of non-Abelian symmetries. Consequences for the classification of MBL protected topological phases (and Floquet phases) will be discussed.