Dynamics in asymmetric double-well condensates

The dynamics of Bose-Einstein condensates in asymmetric double wells is studied. We construct a two-mode model and analyze the properties of the corresponding phase-space diagram, showing in particular that the minimum of the phase-space portrait becomes shifted from the origin as a consequence of t...

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Publicado: 2014
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v90_n4_p_Cataldo
http://hdl.handle.net/20.500.12110/paper_10502947_v90_n4_p_Cataldo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_10502947_v90_n4_p_Cataldo
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spelling paper:paper_10502947_v90_n4_p_Cataldo2023-06-08T16:02:48Z Dynamics in asymmetric double-well condensates The dynamics of Bose-Einstein condensates in asymmetric double wells is studied. We construct a two-mode model and analyze the properties of the corresponding phase-space diagram, showing in particular that the minimum of the phase-space portrait becomes shifted from the origin as a consequence of the nonvanishing overlap between the ground and excited states from which the localized states are derived. We further incorporate effective interaction corrections in the set of two-mode model parameters. Such a formalism is applied to a recent experimentally explored system, which is confined by a toroidal trap with radial barriers forming an arbitrary angle between them. We confront the model results with Gross-Pitaevskii simulations for various angle values finding a very good agreement. We also analyze the accuracy of a previously employed simple model for moving barriers, exploring a possible improvement that could cover a wider range of trap asymmetries. © 2014 American Physical Society. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v90_n4_p_Cataldo http://hdl.handle.net/20.500.12110/paper_10502947_v90_n4_p_Cataldo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The dynamics of Bose-Einstein condensates in asymmetric double wells is studied. We construct a two-mode model and analyze the properties of the corresponding phase-space diagram, showing in particular that the minimum of the phase-space portrait becomes shifted from the origin as a consequence of the nonvanishing overlap between the ground and excited states from which the localized states are derived. We further incorporate effective interaction corrections in the set of two-mode model parameters. Such a formalism is applied to a recent experimentally explored system, which is confined by a toroidal trap with radial barriers forming an arbitrary angle between them. We confront the model results with Gross-Pitaevskii simulations for various angle values finding a very good agreement. We also analyze the accuracy of a previously employed simple model for moving barriers, exploring a possible improvement that could cover a wider range of trap asymmetries. © 2014 American Physical Society.
title Dynamics in asymmetric double-well condensates
spellingShingle Dynamics in asymmetric double-well condensates
title_short Dynamics in asymmetric double-well condensates
title_full Dynamics in asymmetric double-well condensates
title_fullStr Dynamics in asymmetric double-well condensates
title_full_unstemmed Dynamics in asymmetric double-well condensates
title_sort dynamics in asymmetric double-well condensates
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v90_n4_p_Cataldo
http://hdl.handle.net/20.500.12110/paper_10502947_v90_n4_p_Cataldo
_version_ 1768542606870970368

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