Symmetry breaking of localized discrete matter waves induced by spin–orbit coupling

We study localized nonlinear excitations of a dilute Bose–Einstein condensate (BEC) with spin–orbit coupling in a deep optical lattice (OL). For this we introduce a tight-binding model that includes the spin–orbit coupling (SOC) at the discrete level in the form of a generalized discrete nonlinear S...

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Main Authors:	Abdullaev, Fatkhulla, Salerno, Mario
Format:	Article
Language:	English
Published:	Elsevier 2015
Subjects:	QC Physics
Online Access:	http://irep.iium.edu.my/44268/ http://irep.iium.edu.my/44268/ http://irep.iium.edu.my/44268/1/symm_break_PLA.pdf

id	iium-44268
recordtype	eprints
spelling	iium-442682017-08-08T02:48:41Z http://irep.iium.edu.my/44268/ Symmetry breaking of localized discrete matter waves induced by spin–orbit coupling Abdullaev, Fatkhulla Salerno, Mario QC Physics We study localized nonlinear excitations of a dilute Bose–Einstein condensate (BEC) with spin–orbit coupling in a deep optical lattice (OL). For this we introduce a tight-binding model that includes the spin–orbit coupling (SOC) at the discrete level in the form of a generalized discrete nonlinear Schrödingerequation. Existence and stability of discrete solitons of different symmetry types is demonstrated. Quite interestingly, we find three distinctive regions in which discrete solitons undergo spontaneously symmetry breaking, passing from on-site to inter-site and to asymmetric, simply by varying the interatomic interactions. Existence ranges of discrete solitons with inter-site symmetry depend on SOC and shrink to zero as the SOC parameter is increased. Asymmetric discrete solitons appear as novel excitations specific of the SOC. Possible experimental implementation of these results is briefly discussed. Elsevier 2015-07-03 Article PeerReviewed application/pdf en http://irep.iium.edu.my/44268/1/symm_break_PLA.pdf Abdullaev, Fatkhulla and Salerno, Mario (2015) Symmetry breaking of localized discrete matter waves induced by spin–orbit coupling. Physics Letters A, 379. pp. 2252-2256. ISSN 0375-9601 http://www.journals.elsevier.com/physics-letters-a/
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	QC Physics
spellingShingle	QC Physics Abdullaev, Fatkhulla Salerno, Mario Symmetry breaking of localized discrete matter waves induced by spin–orbit coupling
description	We study localized nonlinear excitations of a dilute Bose–Einstein condensate (BEC) with spin–orbit coupling in a deep optical lattice (OL). For this we introduce a tight-binding model that includes the spin–orbit coupling (SOC) at the discrete level in the form of a generalized discrete nonlinear Schrödingerequation. Existence and stability of discrete solitons of different symmetry types is demonstrated. Quite interestingly, we find three distinctive regions in which discrete solitons undergo spontaneously symmetry breaking, passing from on-site to inter-site and to asymmetric, simply by varying the interatomic interactions. Existence ranges of discrete solitons with inter-site symmetry depend on SOC and shrink to zero as the SOC parameter is increased. Asymmetric discrete solitons appear as novel excitations specific of the SOC. Possible experimental implementation of these results is briefly discussed.
format	Article
author	Abdullaev, Fatkhulla Salerno, Mario
author_facet	Abdullaev, Fatkhulla Salerno, Mario
author_sort	Abdullaev, Fatkhulla
title	Symmetry breaking of localized discrete matter waves induced by spin–orbit coupling
title_short	Symmetry breaking of localized discrete matter waves induced by spin–orbit coupling
title_full	Symmetry breaking of localized discrete matter waves induced by spin–orbit coupling
title_fullStr	Symmetry breaking of localized discrete matter waves induced by spin–orbit coupling
title_full_unstemmed	Symmetry breaking of localized discrete matter waves induced by spin–orbit coupling
title_sort	symmetry breaking of localized discrete matter waves induced by spin–orbit coupling
publisher	Elsevier
publishDate	2015
url	http://irep.iium.edu.my/44268/ http://irep.iium.edu.my/44268/ http://irep.iium.edu.my/44268/1/symm_break_PLA.pdf
first_indexed	2023-09-18T21:02:57Z
last_indexed	2023-09-18T21:02:57Z
_version_	1777410745700450304

Symmetry breaking of localized discrete matter waves induced by spin–orbit coupling

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