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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_10502947_v90_n4_p_Cataldo |
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todo:paper_10502947_v90_n4_p_Cataldo2023-10-03T16:00:20Z Dynamics in asymmetric double-well condensates Cataldo, H.M. Jezek, D.M. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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. |
| format |
JOUR |
| author |
Cataldo, H.M. Jezek, D.M. |
| spellingShingle |
Cataldo, H.M. Jezek, D.M. Dynamics in asymmetric double-well condensates |
| author_facet |
Cataldo, H.M. Jezek, D.M. |
| author_sort |
Cataldo, H.M. |
| title |
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 |
| url |
http://hdl.handle.net/20.500.12110/paper_10502947_v90_n4_p_Cataldo |
| work_keys_str_mv |
AT cataldohm dynamicsinasymmetricdoublewellcondensates AT jezekdm dynamicsinasymmetricdoublewellcondensates |
| _version_ |
1807319802746765312 |