Structure and stability of bosonic clouds: Alkaki-metal atoms with negative scattering length
Anno: 1998
Autori: Parola Al., Salasnich L., Reatto L.
Affiliazione autori: University of Milan
Abstract: We investigate the form and stability of a cloud of atoms confined in a harmonic trap when the scattering length is negative. We find that, besides the known low-density metastable solution, a different branch of Bose condensate appears at higher density when nonlocality effects in the attractive part are taken into account. The transition between the two classes of solutions as a function of the number N of atoms can be either sharp or smooth according to the strength and range of the attractive interaction. Use of tight traps is favorable for investigating the evolution of the system, as the strength of the effective interaction increases with N.
Giornale/Rivista: PHYSICAL REVIEW A
Volume: 57 (5) Da Pagina: R3180 A: R3183
Parole chiavi: ultracold atomsDOI: 10.1103/PhysRevA.57.R3180Citazioni: 96dati 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