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

Authors
Salasnich, L Parola, A Reatto, L
Citation
L. Salasnich et al., Bose condensate in a double-well trap: Ground state and elementary excitations, PHYS REV A, 60(5), 1999, pp. 4171-4174
Citations number
26
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
10502947 → ACNP
Volume
60
Issue
5
Year of publication
1999
Pages
4171 - 4174
Database
ISI
SICI code
1050-2947(199911)60:5<4171:BCIADT>2.0.ZU;2-L
Abstract
We study the Bose-Einstein condensate in the MIT double-well trap. We calcu late the ground-state density profile of Na-23 atoms and the Bogoliubov spe ctrum of the elementary excitations as a function of the strength of the do uble-well barrier. In particular, we analyze the behavior of quantum-mechan ical collective excitations. Finally, we discuss the observability criteria for macroscopic quantum tunneling and macroscopic quantum self-trapping. [ S1050-2947(99)03411-3].