Absence of many-body mobility edges
Year: 2016
Type: article
Abstract: Phenomenon of many-body localization violates one of the basic rules of statistical mechanics: It states that certain `localized' macroscopic systems cannot act as a bath for themselves and hence do not relax to equilibrium. The authors of this paper find that, whenever a system is not localized at all thermodynamic parameters (particle density, energy density), then local fluctuations into the non-localized phase, dubbed bubbles, can slowly destroy localization globally. This result provides a rather strong restriction on the existence of many-body localized phases and runs contrary to the idea that there could be genuine localization transitions as a function of temperature.
Institutions: University of California, Santa Barbara, Kavli Institute for Theoretical Physics, KU Leuven, Centre de Recherche en Mathématiques de la Décision, Université Paris Dauphine-PSL, The Abdus Salam International Centre for Theoretical Physics (ICTP), University of Basel, Paul Scherrer Institute, Scuola Internazionale Superiore di Studi Avanzati, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1937272486