Dimer-dimer collisions at finite energies in two-component Fermi gases
Abstract
We introduce a major theoretical generalization of existing techniques for handling the three-body problem that accurately describes the interactions among four fermionic atoms. Application to a two-component Fermi gas accurately determines dimer-dimer scattering parameters at finite energies and can give deeper insight into the corresponding many-body phenomena. To account for finite temperature effects, we calculate the energy-dependent complex dimer-dimer scattering length, which includes contributions from elastic and inelastic collisions. Our results indicate that strong finite-energy effects and dimer dissociation are crucial for understanding the physics in the strongly interacting regime for typical experimental conditions. While our results for dimer-dimer relaxation are consistent with experiment, they confirm only partially a previously published theoretical result.
Keywords
Cite
@article{arxiv.0806.3062,
title = {Dimer-dimer collisions at finite energies in two-component Fermi gases},
author = {J. P. D'Incao and Seth T. Rittenhouse and N. P. Mehta and Chris H. Greene},
journal= {arXiv preprint arXiv:0806.3062},
year = {2009}
}
Comments
4.1 pages, 3 figures, revised text. Supplemental material provided: 2 pages, 2 figures