Data di Pubblicazione:
2006
Citazione:
Thermodynamics of solitonic matter waves in a toroidal trap / L. Salasnich, A. Parola, L. Reatto. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 74:3(2006), pp. 031603.031603/1-031603.031603/4.
Abstract:
We investigate the thermodn. properties of a Bose-Einstein condensate with neg. scattering length confined in a toroidal trapping potential. By numerically solving the coupled Gross-Pitaevskii and Bogoliubov-de Gennes equations, we study the phase transition from the uniform state to the symmetry-breaking state characterized by a bright-soliton condensate and a localized thermal cloud. In the localized regime, three states with a finite condensate fraction are present: the thermodynamically stable localized state, a metastable localized state, and also a metastable uniform state. Remarkably, the presence of the stable localized state strongly increases the crit. temp. of Bose-Einstein condensation. [on SciFinder (R)]
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Bose fluids ; Bose-Einstein condensation ; Free energy ; Phase diagram ; Phase transition ; Phase transition temperature ; Solitons ; Trapping (thermodn. of solitonic matter waves in a toroidal trap)
Elenco autori:
L. Salasnich, A. Parola, L. Reatto
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