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...
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_10502947_v78_n2_p_Capuzzi |
| Aporte de: |
| id |
todo:paper_10502947_v78_n2_p_Capuzzi |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_10502947_v78_n2_p_Capuzzi2023-10-03T15:59:58Z Annihilation of quantized vorticity in a trapped Bose-Einstein condensate via the scattering of density perturbations Capuzzi, P. Federici, F. Tosi, M.P. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Capuzzi, P. Federici, F. Tosi, M.P. 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. |
| format |
JOUR |
| author |
Capuzzi, P. Federici, F. Tosi, M.P. |
| author_facet |
Capuzzi, P. Federici, F. Tosi, M.P. |
| author_sort |
Capuzzi, P. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_10502947_v78_n2_p_Capuzzi |
| work_keys_str_mv |
AT capuzzip annihilationofquantizedvorticityinatrappedboseeinsteincondensateviathescatteringofdensityperturbations AT federicif annihilationofquantizedvorticityinatrappedboseeinsteincondensateviathescatteringofdensityperturbations AT tosimp annihilationofquantizedvorticityinatrappedboseeinsteincondensateviathescatteringofdensityperturbations |
| _version_ |
1807322296955699200 |