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Quantum dynamics of impurities in a 1D Bose gas

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 نشر من قبل Francesco Minardi
 تاريخ النشر 2011
  مجال البحث فيزياء
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Using a species-selective dipole potential, we create initially localized impurities and investigate their interactions with a majority species of bosonic atoms in a one-dimensional configuration during expansion. We find an interaction-dependent amplitude reduction of the oscillation of the impurities size with no measurable frequency shift, and study it as a function of the interaction strength. We discuss possible theoretical interpretations of the data. We compare, in particular, with a polaronic mass shift model derived following Feynman variational approach.



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