1212.0477 (N. T. Zinner)

Efimov States of Heavy Impurities in a Bose-Einstein Condensate    [PDF]

N. T. Zinner

We consider the problem of two heavy impurity particles embedded in a gas of weakly-interacting light mass bosonic particles in the condensed state. Using the Bogoliubov approach to describe the bosonic gas and the Born-Oppenheimer approximation for the three-body dynamics, we calculate the modification to the heavy-heavy two-body potential due to the presence of the condensate. For the case of resonant interaction between the light bosons and the impurities, we present (semi)-analytical results for the potential in the limit of a large condensate coherence length. In particular, we find a formula for the modification to the Efimov scaling factor due to the presence of a degenerate bosonic gas background.

View original: http://arxiv.org/abs/1212.0477