Bose condensate in a double-well trap: Ground state and elementary excitations

Year: 1999

Authors: Salasnich L., Parola A., Reatto L.

Autors Affiliation: INFM, Unitą di Milano, Via Celonia 16, 20133 Milano, Italy; Dipartimento Fisica, Universitą di Milano, Via Celonia 16, 20133 Milano, Italy; Dipartimento di Scienze Fisiche, Univerditą dell\’Insubria, Via Lucini 3, 23100 Como, Italy

Abstract: We study the Bose-Einstein condensate in the MIT double-well trap. We calculate the ground-state density profile of Na-23 atoms and the Bogoliubov spectrum of the elementary excitations as a function of the strength of the double-well barrier. In particular, we analyze the behavior of quantum-mechanical collective excitations. Finally, we discuss the observability criteria for macroscopic quantum tunneling and macroscopic quantum self-trapping. [S1050-2947(99)03411-3].

Journal/Review: PHYSICAL REVIEW A

Volume: 60 (5)      Pages from: 4171  to: 4174

KeyWords: BEC
DOI: 10.1103/PhysRevA.60.4171

Citations: 41
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