Beyond mean-field dynamics in open Bose-Hubbard chains

• Verfasst von: Witthaut, Dirk [VerfasserIn]
• Verfasst von: Trimborn, F. [VerfasserIn]
• Verfasst von: Hennig, H. [VerfasserIn]
• Verfasst von: Kordas, Geōrgios [VerfasserIn]
• Verfasst von: Geisel, T. [VerfasserIn]
• Verfasst von: Wimberger, Sandro [VerfasserIn]
• Titel: Beyond mean-field dynamics in open Bose-Hubbard chains
• Verf.angabe: D. Witthaut, F. Trimborn, H. Hennig, G. Kordas, T. Geisel, and S. Wimberger
• E-Jahr: 2011
• Jahr: 7 June 2011
• Umfang: 7 S.
• Fussnoten: Gesehen am 21.11.2022
• Titel Quelle: Enthalten in: Physical review / A
• Ort Quelle: College Park, Md., 1970
• Jahr Quelle: 2011
• Band/Heft Quelle: 83(2011), 6, Artikel-ID 063608, Seite 1-7
• ISSN Quelle: 1094-1622
• DOI: doi:10.1103/PhysRevA.83.063608
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1823006329

Abstract

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.