Quantum instability of a Bose-Einstein condensate with attractive interaction
Anno: 2002
Autori: Berman G.P., Smerzi A., Bishop A.R.
Affiliazione autori: Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA; Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
Abstract: We study the quantum and the mean-field Gross-Pitaevskii ( GP) dynamics of a Bose-Einstein condensate gas confined in a toroidal trap. According to GP, if the interatomic interaction is attractive, the rotational states of the system can be dynamically stable or unstable depending on the strength of the mean-field energy. The full quantum analysis, however, reveals that the condensate is always unstable. Quantum fluctuations are particularly important close to the GP stability borderline, even for systems with a relatively large number of condensate atoms.
Giornale/Rivista: PHYSICAL REVIEW LETTERS
Volume: 88 (12) Da Pagina: 120402-1 A: 120402-4
Parole chiavi: Ground-state; GasesDOI: 10.1103/PhysRevLett.88.120402Citazioni: 26dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)
