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, H.M., Jezek, D.M.
Formato: JOUR
Acceso en línea: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 todo:paper_14346060_v54_n3_p585_Cataldo2023-10-03T16:15:41Z Influence of global features of a Bose-Einstein condensate on the vortex velocity Cataldo, H.M. Jezek, D.M. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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.
format JOUR
author Cataldo, H.M.
Jezek, D.M.
spellingShingle Cataldo, H.M.
Jezek, D.M.
Influence of global features of a Bose-Einstein condensate on the vortex velocity
author_facet Cataldo, H.M.
Jezek, D.M.
author_sort Cataldo, H.M.
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
url http://hdl.handle.net/20.500.12110/paper_14346060_v54_n3_p585_Cataldo
work_keys_str_mv AT cataldohm influenceofglobalfeaturesofaboseeinsteincondensateonthevortexvelocity
AT jezekdm influenceofglobalfeaturesofaboseeinsteincondensateonthevortexvelocity
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