Universität zu Köln

Tavora, Marco ORCID: 0000-0002-6196-0297, Rosch, Achim ORCID: 0000-0002-6586-5721 and Mitra, Aditi ORCID: 0000-0002-2169-3796 (2014). Quench Dynamics of One-Dimensional Interacting Bosons in a Disordered Potential: Elastic Dephasing and Critical Speeding-Up of Thermalization. Phys. Rev. Lett., 113 (1). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

The dynamics of interacting bosons in one dimension following the sudden switching on of a weak disordered potential is investigated. On time scales before quasiparticles scatter (prethermalized regime), the dephasing from random elastic forward scattering causes all correlations to decay exponentially fast, but the system remains far from thermal equilibrium. For longer times, the combined effect of disorder and interactions gives rise to inelastic scattering and to thermalization. A novel quantum kinetic equation accounting for both disorder and interactions is employed to study the dynamics. Thermalization turns out to be most effective close to the superfluid-Bose-glass critical point where nonlinearities become more and more important. The numerically obtained thermalization times are found to agree well with analytic estimates.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Tavora, Marco UNSPECIFIED orcid.org/0000-0002-6196-0297 UNSPECIFIED Rosch, Achim UNSPECIFIED orcid.org/0000-0002-6586-5721 UNSPECIFIED Mitra, Aditi UNSPECIFIED orcid.org/0000-0002-2169-3796 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-434113
DOI:	10.1103/PhysRevLett.113.010601
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	113
Number:	1
Date:	2014
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ANDERSON LOCALIZATION; INSULATOR Multiple languages Physics, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/43411