Universal Dimer in a Collisionally Opaque Medium: Experimental Observables and Efimov Resonances
Quantum Gases
2012-04-17 v3 Atomic Physics
Quantum Physics
Abstract
A universal dimer is subject to secondary collisions with atoms when formed in a cloud of ultracold atoms via three-body recombination. We show that in a collisionally opaque medium, the value of the scattering length that results in the maximum number of secondary collisions may not correspond to the Efimov resonance at the atom-dimer threshold and thus can not be automatically associated with it. This result explains a number of controversies in recent experimental results on universal three-body states and supports the emerging evidence for the significant finite range corrections to the first excited Efimov energy level.
Cite
@article{arxiv.1111.5503,
title = {Universal Dimer in a Collisionally Opaque Medium: Experimental Observables and Efimov Resonances},
author = {Olga Machtey and David A. Kessler and Lev Khaykovich},
journal= {arXiv preprint arXiv:1111.5503},
year = {2012}
}
Comments
5 pages, 2 figures