Evidence for a critical velocity in a Bose-Einstein condensed gas

Authors
Raman, C Kohl, M Onofrio, R Durfee, DS Kuklewicz, CE Hadzibabic, Z Ketterle, W
Citation
C. Raman et al., Evidence for a critical velocity in a Bose-Einstein condensed gas, PHYS REV L, 83(13), 1999, pp. 2502-2505
Citations number
21
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
13
Year of publication
1999
Pages
2502 - 2505
Database
ISI
SICI code
0031-9007(19990927)83:13<2502:EFACVI>2.0.ZU;2-2
Abstract
We have studied dissipation in a Bose-Einstein condensed gas by moving a bl ue detuned laser beam through the condensate at different velocities. Stron g heating was observed only above a critical velocity.