• advanced search
  • search
ibs PR

Welcome to the publication repository of the Institute for Basic Science.
This is an online service giving access to bibliographic data and full-texts about research publications produced by the research centers of IBS.
Full texts are available only if copyright and confidentiality conditions permit.

Interaction-induced connectivity of disordered two-particle states

      
Title : Interaction-induced connectivity of disordered two-particle states
Authors : Krimer, DO; S. Flach
Issue Date : 201503
Publisher : AMER PHYSICAL SOC
Journal : PHYSICAL REVIEW B, v.91, no.10, pp.100201 -
Abstract : We study the interaction-induced connectivity in the Fock space of two particles in a disordered onedimensional potential. Recent computational studies showed that the largest localization length xi(2) of two interacting particles in a weakly random tight-binding chain is increasing unexpectedly slow relative to the single-particle localization length xi(1), questioning previous scaling estimates. We show this to be a consequence of the approximate restoring of momentum conservation of weakly localized single-particle eigenstates, and disorder-induced phase shifts for partially overlapping states. The leading resonant links appear among states which share the same energy and momentum. We substantiate our analytical approach by computational studies for up to xi(1) = 1000. A potential nontrivial scaling regime sets in for xi(1) approximate to 400
ISSN : 1098-0121
Language : English
Files in This Item:
qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.