Collective oscillations of a one-dimensional trapped Bose-Einstein gas
Anno: 2002
Autori: Menotti C., Stringari S.
Affiliazione autori: Univ Trent, Dipartimento Fis, I-38050 Trento, Italy; BEC INFM, I-38050 Trento, Italy; Univ Cattolica Sacro Cuore, Dipartimento Matemat & Fis, I-25121 Brescia, Italy.
Abstract: Starting from the hydrodynamic equations of superfluids, we calculate the frequencies of the collective oscillations of a harmonically trapped Bose-Einstein gas for various one-dimensional configurations at zero temperature. These include the mean-field regime described by Gross-Pitaevskii theory and the beyond-mean-field regime at small densities described by the Lieb-Liniger theory. The relevant combinations of the physical parameters governing the transition between the different regimes as well as the conditions of applicability of the hydrodynamic equations are discussed.
Giornale/Rivista: PHYSICAL REVIEW A
Volume: 66 (4) Da Pagina: 43610-1 A: 43610-6
Parole chiavi: Excitations; Propagation; Bosons; SoundDOI: 10.1103/PhysRevA.66.043610Citazioni: 256dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-06-29Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)
