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

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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...

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Autor principal: Capuzzi, P.
Otros Autores: Federici, F., Tosi, M.P
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2008
Acceso en línea:Registro en Scopus
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Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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100 1 |a Capuzzi, P. 
245 1 0 |a Annihilation of quantized vorticity in a trapped Bose-Einstein condensate via the scattering of density perturbations 
260 |c 2008 
270 1 0 |m Capuzzi, P.; Consejo Nacional de Investigaciones Científicas y Técnicas, Departamento de Física, Universidad de Buenos Aires, RA-1428 Buenos Airesc, Argentina; email: capuzzi@df.uba.ar 
506 |2 openaire  |e Política editorial 
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520 3 |a 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.  |l eng 
593 |a Consejo Nacional de Investigaciones Científicas y Técnicas, Departamento de Física, Universidad de Buenos Aires, RA-1428 Buenos Airesc, Argentina 
593 |a NEST-CNR-INFM and Classe di Scienze, Scuola Normale Superiore, I-56126 Pisa, Italy 
690 1 0 |a ANGULAR MOMENTUM 
690 1 0 |a BOSE-EINSTEIN CONDENSATION 
690 1 0 |a GROUND STATE 
690 1 0 |a PERTURBATION TECHNIQUES 
690 1 0 |a STEAM CONDENSERS 
690 1 0 |a AXISYMMETRIC VORTEX 
690 1 0 |a BOSE-EINSTEIN CONDENSATES 
690 1 0 |a DENSITY PERTURBATIONS 
690 1 0 |a DIFFUSION EFFECTS 
690 1 0 |a ENERGY-BARRIER 
690 1 0 |a GROSS-PITAEVSKII EQUATION 
690 1 0 |a GROUND-STATE ENERGIES 
690 1 0 |a QUANTIZED VORTICES 
690 1 0 |a SCATTERING PROCESSES 
690 1 0 |a SIMILAR PATTERN 
690 1 0 |a TRAPPED BOSE-EINSTEIN CONDENSATE 
690 1 0 |a VARIATION AL APPROACH 
690 1 0 |a VORTEX FLOW 
700 1 |a Federici, F. 
700 1 |a Tosi, M.P. 
773 0 |d 2008  |g v. 78  |k n. 2  |p Phys Rev A  |x 10502947  |t Physical Review A - Atomic, Molecular, and Optical Physics 
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856 4 0 |u https://doi.org/10.1103/PhysRevA.78.023604  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_10502947_v78_n2_p_Capuzzi  |y Handle 
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