title: Colliding Bose-Einstein condensates to observe Efimov physics.
abstract: We explore the manifestation of Efimov physics through the collision energy dependence of the three-body scattering observables and propose that it can be measured by observing atom loss in collisions of Bose-Einstein condensates. Our study shows that log-periodic Efimov features in the scattering observables extend beyond the usual threshold regime to nonzero collision energies and result from two interfering pathways. Further, these oscillations have a one-to-one connection with the scattering length oscillations at zero energy and thus to Efimov states themselves.
authors.affiliation: Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA.
authors.forename: Yujun
authors.initials: Y
authors.lastname: Wang
authors.forename: J P
authors.initials: JP
authors.lastname: D'Incao
authors.forename: H-C
authors.initials: HC
authors.lastname: Nägerl
authors.forename: B D
authors.initials: BD
authors.lastname: Esry