• français
    • English
  • English 
    • français
    • English
  • Login
JavaScript is disabled for your browser. Some features of this site may not work without it.
BIRD Home

Browse

This CollectionBy Issue DateAuthorsTitlesSubjectsJournals BIRDResearch centres & CollectionsBy Issue DateAuthorsTitlesSubjectsJournals

My Account

Login

Statistics

View Usage Statistics

Absence of many-body mobility edges

Thumbnail
View/Open
AbsenceMBEdges.pdf (649.4Kb)
Date
2016
Dewey
Sciences connexes (physique, astrophysique)
Sujet
Many-body localization
Journal issue
Physical Review B : Condensed matter and materials physics
Volume
93
Publication date
01-2016
DOI
http://dx.doi.org/10.1103/PhysRevB.93.014203
URI
https://basepub.dauphine.fr/handle/123456789/17256
Collections
  • CEREMADE : Publications
Metadata
Show full item record
Author
De Roeck, Wojciech
5150 Instituut voor Levende Talen (ILT) - Katholieke Universiteit Leuven (KUL) - Dekenstraat 6 - Leuven, België [ILT - KATHOLIEKE UNIVERSITEIT LEUVEN (KUL) - BELGIQUE]
Huveneers, François
60 CEntre de REcherches en MAthématiques de la DEcision [CEREMADE]
Müller, Markus
Schiulaz, Mauro
Type
Article accepté pour publication ou publié
Abstract (EN)
Localization transitions as a function of temperature require a many-body mobility edge in energy, separating localized from ergodic states. We argue that this scenario is inconsistent because local fluctuations into the ergodic phase within the supposedly localized phase can serve as mobile bubbles that induce global delocalization. Such fluctuations inevitably appear with a low but finite density anywhere in any typical state. We conclude that the only possibility for many-body localization to occur are lattice models that are localized at all energies. Building on a close analogy with a model of assisted two-particle hopping, where interactions induce delocalization, we argue why hot bubbles are mobile and do not localize upon diluting their energy. Numerical tests of our scenario show that previously reported mobility edges cannot be distinguished from finite-size effects.

  • Accueil Bibliothèque
  • Site de l'Université Paris-Dauphine
  • Contact
SCD Paris Dauphine - Place du Maréchal de Lattre de Tassigny 75775 Paris Cedex 16

 Content on this site is licensed under a Creative Commons 2.0 France (CC BY-NC-ND 2.0) license.