Collisionless collective modes of fermions in magnetic traps
We present a random-phase-approximation formalism for the collective spectrum of two hyperfine species of dilute [Formula Presented] atoms, magnetically trapped at zero temperature and subjected to a repulsive s-wave interaction between atoms with different spin projections. We examine the density a...
| Autores principales: | , |
|---|---|
| Formato: | JOUR |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_10502947_v63_n6_p8_Capuzzi |
| Aporte de: |
| id |
todo:paper_10502947_v63_n6_p8_Capuzzi |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_10502947_v63_n6_p8_Capuzzi2023-10-03T15:59:17Z Collisionless collective modes of fermions in magnetic traps Capuzzi, P. Hernández, E.S. We present a random-phase-approximation formalism for the collective spectrum of two hyperfine species of dilute [Formula Presented] atoms, magnetically trapped at zero temperature and subjected to a repulsive s-wave interaction between atoms with different spin projections. We examine the density and the spin oscillation spectra, as well as the transition density profiles created by external multipolar fields. The zero sound spectrum is always fragmented and the density and spin channels become clearly distinguishable if the trapping potentials acting on the species are identical. Although this distinction is lost when these confining fields are different, at selected excitation frequencies the transition densities may display the signature of the channel. © 2001 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_v63_n6_p8_Capuzzi |
| 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 present a random-phase-approximation formalism for the collective spectrum of two hyperfine species of dilute [Formula Presented] atoms, magnetically trapped at zero temperature and subjected to a repulsive s-wave interaction between atoms with different spin projections. We examine the density and the spin oscillation spectra, as well as the transition density profiles created by external multipolar fields. The zero sound spectrum is always fragmented and the density and spin channels become clearly distinguishable if the trapping potentials acting on the species are identical. Although this distinction is lost when these confining fields are different, at selected excitation frequencies the transition densities may display the signature of the channel. © 2001 The American Physical Society. |
| format |
JOUR |
| author |
Capuzzi, P. Hernández, E.S. |
| spellingShingle |
Capuzzi, P. Hernández, E.S. Collisionless collective modes of fermions in magnetic traps |
| author_facet |
Capuzzi, P. Hernández, E.S. |
| author_sort |
Capuzzi, P. |
| title |
Collisionless collective modes of fermions in magnetic traps |
| title_short |
Collisionless collective modes of fermions in magnetic traps |
| title_full |
Collisionless collective modes of fermions in magnetic traps |
| title_fullStr |
Collisionless collective modes of fermions in magnetic traps |
| title_full_unstemmed |
Collisionless collective modes of fermions in magnetic traps |
| title_sort |
collisionless collective modes of fermions in magnetic traps |
| url |
http://hdl.handle.net/20.500.12110/paper_10502947_v63_n6_p8_Capuzzi |
| work_keys_str_mv |
AT capuzzip collisionlesscollectivemodesoffermionsinmagnetictraps AT hernandezes collisionlesscollectivemodesoffermionsinmagnetictraps |
| _version_ |
1807319250117853184 |