Collective oscillations of a one-dimensional trapped Bose-Einstein gas
Year: 2002
Authors: Menotti C., Stringari S.
Autors Affiliation: 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.
Journal/Review: PHYSICAL REVIEW A
Volume: 66 (4) Pages from: 43610-1 to: 43610-6
KeyWords: Excitations; Propagation; Bosons; SoundDOI: 10.1103/PhysRevA.66.043610ImpactFactor: 2.986Citations: 251data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-10References taken from IsiWeb of Knowledge: (subscribers only)
