Volume 101, Number 6, March 2013
|Number of page(s)||6|
|Published online||04 April 2013|
Efimov states of heavy impurities in a Bose-Einstein condensate
Department of Physics and Astronomy, Aarhus University - Aarhus C, DK-8000, Denmark
Received: 3 December 2012
Accepted: 8 March 2013
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 of the Efimov scaling factor due to the presence of a degenerate bosonic gas background.
PACS: 03.65.Ge – Solutions of wave equations: bound states / 03.75.Hh – Static properties of condensates; thermodynamical, statistical, and structural properties / 67.85.Pq – Mixtures of Bose and Fermi gases
© EPLA, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.