Journal article
Rotons in Gaseous Bose-Einstein Condensates Irradiated by a Laser
Abstract
A gaseous Bose-Einstein condensate irradiated by a far off-resonance laser has long-range interatomic correlations caused by laser-induced dipole-dipole interactions. These correlations, which are tunable via the laser intensity and frequency, can produce a "roton" minimum in the excitation spectrum--behavior reminiscent of the strongly correlated superfluid liquid He II.
Authors
O’Dell DHJ; Giovanazzi S; Kurizki G
Journal
Physical Review Letters, Vol. 90, No. 11,
Publisher
American Physical Society (APS)
Publication Date
March 21, 2003
DOI
10.1103/physrevlett.90.110402
ISSN
0031-9007