Rotons in gaseous Bose-Einstein condensates irradiated by a laser
classification
❄️ cond-mat.soft
keywords
laserbose-einsteincorrelationsgaseousirradiatedcausedcondensatecondensates
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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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