Instability of the nonvortex state toward a quantized vortex in a Bose-Einstein condensate under external rotation

Authors
Isoshima, T Machida, K
Citation
T. Isoshima et K. Machida, Instability of the nonvortex state toward a quantized vortex in a Bose-Einstein condensate under external rotation, PHYS REV A, 60(4), 1999, pp. 3313-3316
Citations number
23
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
10502947 → ACNP
Volume
60
Issue
4
Year of publication
1999
Pages
3313 - 3316
Database
ISI
SICI code
1050-2947(199910)60:4<3313:IOTNST>2.0.ZU;2-8
Abstract
The instability condition of the nonvortex state toward vortex formation is examined within the Bogoliubov theory when a Bose-Einstein condensate is u nder externally forced rotation. The obtained critical angular velocity com bined with the previous stability conditions for a vortex yields a detailed phase diagram in the critical velocity vs the system parameter. This facil itates vortex formation experiments for alkali-metal-atom gases confined in a harmonic potential. [S1050-2947(99)01410-9].