Orateur
Jose P. D'Incao
(JILA, University of Colorado and NIST)
Description
In the past few years experimental and theoretical advances in the understanding
of few-body physics in ultracold quantum gases with tunable interactions have
lead to the confirmation of one of the most fundamental quantum phenomena
involving just a few particles: The Efimov effect. In our recent work, we have
extended our adiabatic hyperspherical representation to incorporate the effects of
dipolar interaction, an important ingredient for studing few-body physics in
ultracold dipolar gases. Even though a long-range anisotropic dipolar interaction
has all the ingredients to "destroy" the Efimov effect, our work shows that not
only does the effective attractive interaction that characterizes the Efimov effect
persist, but also that the dipolar interaction is extremely beneficial for the study
of the Efimov effect. We find dipolar Efimov states to be universal in the sense
that the system has a universal three-body parameter. Consequently, energies of
Efimov states in dipolar systems have a well-defined value and depend only on
two-dipole physics. These states tend to be long-lived, making dipolar gases
ideal candidates for studing Efimov states. In this talk, I will emphasize the
importance of these findings and connect them to the theoretical extension of
other few-body dipolar systems.
Author
Jose P. D'Incao
(JILA, University of Colorado and NIST)
