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          Institute: MPI für Dynamik und Selbstorganisation     Collection: Nichtlineare Dynamik     Display Documents



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ID: 585318.0, MPI für Dynamik und Selbstorganisation / Nichtlineare Dynamik
Beyond mean-field dynamics in open Bose-Hubbard chains
Authors:Witthaut, Dirk; Trimborn, Friederike; Hennig, Holger; Kordas, Georgios; Geisel, Theo; Wimberger, Sandro
Language:English
Date of Publication (YYYY-MM-DD):2011-06-07
Title of Journal:Physical Review A
Volume:83
Sequence Number of Article:063608
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We investigate the effects of phase noise and particle loss on the dynamics of a Bose-Einstein condensate in an optical lattice. Starting from the many-body master equation, we discuss the applicability of generalized mean-field approximations in the presence of dissipation as well as methods to simulate quantum effects beyond mean field by including higher-order correlation functions. It is shown that localized particle dissipation leads to surprising dynamics, as it can suppress decay and restore the coherence of a Bose-Einstein condensate. These effects can be applied to engineer coherent structures such as stable discrete breathers and dark solitons.
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Communicated by:Folkert Müller-Hoissen
Affiliations:MPI für Dynamik und Selbstorganisation/Nichtlineare Dynamik
External Affiliations:Institut fuer Theoretische Physik, Leibniz Universitaet Hannover, D-30167 Hannover, Germany
Institut fuer Theoretische Physik and Center for Quantum Dynamics, Universitaet Heidelberg, D-69120 Heidelberg, Germany
Identifiers:DOI:http://dx.doi.org/10.1103/PhysRevA.83.063608
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