Absence of Landau damping in driven three-component Bose–Einstein condensate in optical lattices

We explore the quantum many-body physics of a three-component Bose-Einstein condensate in an optical lattice driven by laser fields in V and Λ configurations. We obtain exact analytical expressions for the energy spectrum and amplitudes of elementary excitations, and discover symmetries among them....

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Autores principales: Shchedrin, Gavriil, Jaschke, Daniel, Carr, Lincoln D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6070551/
https://www.ncbi.nlm.nih.gov/pubmed/30069027
http://dx.doi.org/10.1038/s41598-018-29454-y
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author Shchedrin, Gavriil
Jaschke, Daniel
Carr, Lincoln D.
author_facet Shchedrin, Gavriil
Jaschke, Daniel
Carr, Lincoln D.
author_sort Shchedrin, Gavriil
collection PubMed
description We explore the quantum many-body physics of a three-component Bose-Einstein condensate in an optical lattice driven by laser fields in V and Λ configurations. We obtain exact analytical expressions for the energy spectrum and amplitudes of elementary excitations, and discover symmetries among them. We demonstrate that the applied laser fields induce a gap in the otherwise gapless Bogoliubov spectrum. We find that Landau damping of the collective modes above the energy of the gap is carried by laser-induced roton modes and is considerably suppressed compared to the phonon-mediated damping endemic to undriven scalar condensates
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spelling pubmed-60705512018-08-06 Absence of Landau damping in driven three-component Bose–Einstein condensate in optical lattices Shchedrin, Gavriil Jaschke, Daniel Carr, Lincoln D. Sci Rep Article We explore the quantum many-body physics of a three-component Bose-Einstein condensate in an optical lattice driven by laser fields in V and Λ configurations. We obtain exact analytical expressions for the energy spectrum and amplitudes of elementary excitations, and discover symmetries among them. We demonstrate that the applied laser fields induce a gap in the otherwise gapless Bogoliubov spectrum. We find that Landau damping of the collective modes above the energy of the gap is carried by laser-induced roton modes and is considerably suppressed compared to the phonon-mediated damping endemic to undriven scalar condensates Nature Publishing Group UK 2018-08-01 /pmc/articles/PMC6070551/ /pubmed/30069027 http://dx.doi.org/10.1038/s41598-018-29454-y Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Shchedrin, Gavriil
Jaschke, Daniel
Carr, Lincoln D.
Absence of Landau damping in driven three-component Bose–Einstein condensate in optical lattices
title Absence of Landau damping in driven three-component Bose–Einstein condensate in optical lattices
title_full Absence of Landau damping in driven three-component Bose–Einstein condensate in optical lattices
title_fullStr Absence of Landau damping in driven three-component Bose–Einstein condensate in optical lattices
title_full_unstemmed Absence of Landau damping in driven three-component Bose–Einstein condensate in optical lattices
title_short Absence of Landau damping in driven three-component Bose–Einstein condensate in optical lattices
title_sort absence of landau damping in driven three-component bose–einstein condensate in optical lattices
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6070551/
https://www.ncbi.nlm.nih.gov/pubmed/30069027
http://dx.doi.org/10.1038/s41598-018-29454-y
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AT carrlincolnd absenceoflandaudampingindriventhreecomponentboseeinsteincondensateinopticallattices

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