Many-body localization

Event Dates: 

Friday, January 30, 2015 - 10:30am

CTQM Seminar Type: 

  • CTQM Seminar

Seminar Location: 

  • Duane Physics Room G126

Speaker Name(s): 

David Huse

Speaker Affiliation(s): 

Princeton University

Abstract, Event Details: 

I will discuss our present understanding of the physics of the many-body localized phase and of the quantum phase transition between many-body localization and quantum thermalization.  The many-body localized phase can be understood as a new type of integrable system, where the emergent conserved quantities are localized operators (H., Nandkishore, Oganesyan, PRB 2014).  The low frequency dynamics in this phase differs in important ways from that of noninteracting Anderson localization.  With Vosk and Altman (arXiv:1412.3117) we have developed a "first draft" of a renormalization group treatment of the many-body localization phase transition, which is governed by an infinite-randomness fixed point.  Near this transition there are various interesting rare-region (quantum Griffiths) effects (Gopalakrishnan and H., in progress).