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arXiv · cond-mat/0301028

Rotons in gaseous Bose-Einstein condensates irradiated by a laser

D. H. J. O'Dell·S. Giovanazzi·G. Kurizki
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Abstract

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.

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D. H. J. O'Dell, S. Giovanazzi, G. Kurizki. 2003-01-03. Rotons in gaseous Bose-Einstein condensates irradiated by a laser. https://doi.org/10.1103/physrevlett.90.110402

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