Influence of global features of a Bose-Einstein condensate on the vortex velocity

We study the way in which the geometry of the trapping potential affects the vortex velocity in a Bose-Einstein condensate confined by a toroidal trap. We calculate the vortex precession velocity through a simple relationship between such a velocity and the gradient of the numerically obtained vorte...

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Autores principales: Cataldo, Horacio Máximo, Jezek, Dora Marta
Publicado: 2009
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v54_n3_p585_Cataldo
http://hdl.handle.net/20.500.12110/paper_14346060_v54_n3_p585_Cataldo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_14346060_v54_n3_p585_Cataldo2023-06-08T16:15:30Z Influence of global features of a Bose-Einstein condensate on the vortex velocity Cataldo, Horacio Máximo Jezek, Dora Marta We study the way in which the geometry of the trapping potential affects the vortex velocity in a Bose-Einstein condensate confined by a toroidal trap. We calculate the vortex precession velocity through a simple relationship between such a velocity and the gradient of the numerically obtained vortex energy. We observe that our results correspond very closely to the velocity calculated through time evolution simulations. However, we find that the estimates derived from available velocity field formulas present appreciable differences. To resolve such discrepancies, we further study the induced velocity field, analyzing the effect of global features of the condensate on such a field and on the precession velocity. © 2009 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg. Fil:Cataldo, H.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Jezek, D.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v54_n3_p585_Cataldo http://hdl.handle.net/20.500.12110/paper_14346060_v54_n3_p585_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 We study the way in which the geometry of the trapping potential affects the vortex velocity in a Bose-Einstein condensate confined by a toroidal trap. We calculate the vortex precession velocity through a simple relationship between such a velocity and the gradient of the numerically obtained vortex energy. We observe that our results correspond very closely to the velocity calculated through time evolution simulations. However, we find that the estimates derived from available velocity field formulas present appreciable differences. To resolve such discrepancies, we further study the induced velocity field, analyzing the effect of global features of the condensate on such a field and on the precession velocity. © 2009 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.
author Cataldo, Horacio Máximo
Jezek, Dora Marta
spellingShingle Cataldo, Horacio Máximo
Jezek, Dora Marta
Influence of global features of a Bose-Einstein condensate on the vortex velocity
author_facet Cataldo, Horacio Máximo
Jezek, Dora Marta
author_sort Cataldo, Horacio Máximo
title Influence of global features of a Bose-Einstein condensate on the vortex velocity
title_short Influence of global features of a Bose-Einstein condensate on the vortex velocity
title_full Influence of global features of a Bose-Einstein condensate on the vortex velocity
title_fullStr Influence of global features of a Bose-Einstein condensate on the vortex velocity
title_full_unstemmed Influence of global features of a Bose-Einstein condensate on the vortex velocity
title_sort influence of global features of a bose-einstein condensate on the vortex velocity
publishDate 2009
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v54_n3_p585_Cataldo
http://hdl.handle.net/20.500.12110/paper_14346060_v54_n3_p585_Cataldo
work_keys_str_mv AT cataldohoraciomaximo influenceofglobalfeaturesofaboseeinsteincondensateonthevortexvelocity
AT jezekdoramarta influenceofglobalfeaturesofaboseeinsteincondensateonthevortexvelocity
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