Orateur
Prof.
Brett Esry
(Department of Physics and J.R. Macdonald Laboratory Kansas State University)
Description
Few-body physics has seen a few rather dramatic experimental realizations
of long-predicted Efimov physics in the last five years. These successes
have come thanks to the unprecedented control that ultracold atomic gases afford
for few-body systems. I will describe a new class of few-body states that might
also be observable in ultracold systems. These states occur not for short-range
two-body potentials, but rather for long-range 1/r^2 potentials. Consequently,
no scattering length can be defined in the usual sense, making the problem
distinct from the Efimov scenario. Like the Efimov effect, however, an infinity
of three-body bound states is possible even when there are no bound two-body
states. I will discuss this point and our exploration of these novel states.
Author
Prof.
Brett Esry
(Department of Physics and J.R. Macdonald Laboratory Kansas State University)
Co-auteurs
Dr
N. Guevara
Dr
Y. Wang
