2003/01/03 by D. H. J. O'Dell, S. Giovanazzi, G. Kurizki · 1 citation
Physics and Astronomy · #cond-mat.soft
paper · pdf · doi:10.1103/physrevlett.90.110402
published as Phys. Rev. Lett 90, 110402 (2003) · 6 pages, includes 3 figures
arxiv created 2003/01/03 · arxiv updated 2009/11/30
A gaseous Bose-Einstein condensate (BEC) 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 helium II.