Macroscopic angular-momentum states of Bose-Einstein condensates in toroidal traps
Anno: 1999
Autori: Benakli M., Raghavan S., Smerzi A., Fantoni S., Shenoy S.R.
Affiliazione autori: Abdus Salaam Int Ctr Theoret Phys, I-34100 Trieste, Italy; Scuola Int Super Studi Avanzati, I-34014 Trieste, Italy; Ist Nazl Fis Mat, I-34014 Trieste, Italy.
Abstract: We study the stability of a rotating repulsive-atom Bose-Einstein condensate in a toroidal trap. The resulting macroscopic angular-momentum states with integer vorticity l spread radially, lowering rotational energies. These states are robust against vorticity-lowering decays, with estimated metastability barriers capable of sustaining large angular momenta (l less than or similar to 10) for typical parameters. We identify the centrifugally squashed l-dependent density profile as a possible signature of condensate rotation and superfluidity.
Giornale/Rivista: EUROPHYSICS LETTERS
Volume: 46 (3) Da Pagina: 275 A: 281
Parole chiavi: Collective Excitations; Ground-state; Gas; Atoms; Vortices; BosonsDOI: 10.1209/epl/i1999-00256-8Citazioni: 27dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)
