Bulk and collective properties of a dilute Fermi gas in the BCS-BEC crossover
Anno: 2005
Autori: Manini N., Salasnich L.
Affiliazione autori: Univ Milan, Dipartimento Fis, Ist Nazl Fis Mat, Unita Milano, I-20133 Milan, Italy
Abstract: We investigate the zero-temperature properties of a dilute two-component Fermi gas with attractive interspecies interaction in the BCS-BEC crossover. We build an efficient parametrization of the energy per particle based on Monte Carlo data and asymptotic behavior. This parametrization provides, in turn, analytical expressions for several bulk properties of the system such as the chemical potential, the pressure, and the sound velocity. In addition, by using a time-dependent density functional approach, we determine the collective modes of the Fermi gas under harmonic confinement. The calculated collective frequencies are compared to experimental data on confined vapors of Li-6 atoms and with other theoretical predictions.
Giornale/Rivista: PHYSICAL REVIEW A
Volume: 71 (3) Da Pagina: 033625 A: 033625
Parole chiavi: BOSE-EINSTEIN CONDENSATIONDOI: 10.1103/PhysRevA.71.033625Citazioni: 151dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui