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...

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Autores principales: Capuzzi, P., Hernández, E.S.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10502947_v63_n6_p8_Capuzzi
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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
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