Annihilation of quantized vorticity in a trapped Bose-Einstein condensate via the scattering of density perturbations

We evaluate the extraction of angular momentum from quantized vortices in trapped Bose-Einstein condensates. Within a variational approach we show that the energy barrier between the ground state and the state containing an axisymmetric vortex can be crossed in a scattering process by density pertur...

Descripción completa

Guardado en:

Detalles Bibliográficos
Publicado:	2008
Materias:	Angular momentum Bose-Einstein condensation Ground state Perturbation techniques Steam condensers Axisymmetric vortex Bose-Einstein condensates Density perturbations Diffusion effects Energy-barrier Gross-Pitaevskii equation Ground-state energies Quantized vortices Scattering processes Similar pattern Trapped Bose-Einstein condensate Variation AL approach Vortex flow
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v78_n2_p_Capuzzi http://hdl.handle.net/20.500.12110/paper_10502947_v78_n2_p_Capuzzi
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_10502947_v78_n2_p_Capuzzi
record_format	dspace
spelling	paper:paper_10502947_v78_n2_p_Capuzzi2023-06-08T16:02:29Z Annihilation of quantized vorticity in a trapped Bose-Einstein condensate via the scattering of density perturbations Angular momentum Bose-Einstein condensation Ground state Perturbation techniques Steam condensers Axisymmetric vortex Bose-Einstein condensates Density perturbations Diffusion effects Energy-barrier Gross-Pitaevskii equation Ground-state energies Quantized vortices Scattering processes Similar pattern Trapped Bose-Einstein condensate Variation AL approach Vortex flow We evaluate the extraction of angular momentum from quantized vortices in trapped Bose-Einstein condensates. Within a variational approach we show that the energy barrier between the ground state and the state containing an axisymmetric vortex can be crossed in a scattering process by density perturbations. The transfer of angular momentum can be made total for suitably chosen density perturbations carrying about 10% of the ground-state energy, irrespectively of the number of particles in the condensate. A similar pattern is reproduced by the full solution of the Gross-Pitaevskii equation, although interference and diffusion effects are now seen to limit the efficiency of the process. © 2008 The American Physical Society. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v78_n2_p_Capuzzi http://hdl.handle.net/20.500.12110/paper_10502947_v78_n2_p_Capuzzi
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Angular momentum Bose-Einstein condensation Ground state Perturbation techniques Steam condensers Axisymmetric vortex Bose-Einstein condensates Density perturbations Diffusion effects Energy-barrier Gross-Pitaevskii equation Ground-state energies Quantized vortices Scattering processes Similar pattern Trapped Bose-Einstein condensate Variation AL approach Vortex flow
spellingShingle	Angular momentum Bose-Einstein condensation Ground state Perturbation techniques Steam condensers Axisymmetric vortex Bose-Einstein condensates Density perturbations Diffusion effects Energy-barrier Gross-Pitaevskii equation Ground-state energies Quantized vortices Scattering processes Similar pattern Trapped Bose-Einstein condensate Variation AL approach Vortex flow Annihilation of quantized vorticity in a trapped Bose-Einstein condensate via the scattering of density perturbations
topic_facet	Angular momentum Bose-Einstein condensation Ground state Perturbation techniques Steam condensers Axisymmetric vortex Bose-Einstein condensates Density perturbations Diffusion effects Energy-barrier Gross-Pitaevskii equation Ground-state energies Quantized vortices Scattering processes Similar pattern Trapped Bose-Einstein condensate Variation AL approach Vortex flow
description	We evaluate the extraction of angular momentum from quantized vortices in trapped Bose-Einstein condensates. Within a variational approach we show that the energy barrier between the ground state and the state containing an axisymmetric vortex can be crossed in a scattering process by density perturbations. The transfer of angular momentum can be made total for suitably chosen density perturbations carrying about 10% of the ground-state energy, irrespectively of the number of particles in the condensate. A similar pattern is reproduced by the full solution of the Gross-Pitaevskii equation, although interference and diffusion effects are now seen to limit the efficiency of the process. © 2008 The American Physical Society.
title	Annihilation of quantized vorticity in a trapped Bose-Einstein condensate via the scattering of density perturbations
title_short	Annihilation of quantized vorticity in a trapped Bose-Einstein condensate via the scattering of density perturbations
title_full	Annihilation of quantized vorticity in a trapped Bose-Einstein condensate via the scattering of density perturbations
title_fullStr	Annihilation of quantized vorticity in a trapped Bose-Einstein condensate via the scattering of density perturbations
title_full_unstemmed	Annihilation of quantized vorticity in a trapped Bose-Einstein condensate via the scattering of density perturbations
title_sort	annihilation of quantized vorticity in a trapped bose-einstein condensate via the scattering of density perturbations
publishDate	2008
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v78_n2_p_Capuzzi http://hdl.handle.net/20.500.12110/paper_10502947_v78_n2_p_Capuzzi
_version_	1768543622142099456

Annihilation of quantized vorticity in a trapped Bose-Einstein condensate via the scattering of density perturbations

Ejemplares similares