Second-order virial expansion for an atomic gas in a harmonic waveguide
Quantum Gases
2016-07-06 v2 Quantum Physics
Abstract
The virial expansion for cold two-component Fermi and Bose atomic gases is considered in the presence of a waveguide and in the vicinity of a Feshbach resonance. The interaction between atoms and the coupling with the Feshbach molecules is modeled using a quantitative separable two-channel model. The scattering phase-shift in an atomic waveguide is defined. This permits us to extend the Beth-Uhlenbeck formula for the second-order virial coefficient to this inhomogeneous case.
Cite
@article{arxiv.1603.07469,
title = {Second-order virial expansion for an atomic gas in a harmonic waveguide},
author = {Tom Kristensen and Xavier Leyronas and Ludovic Pricoupenko},
journal= {arXiv preprint arXiv:1603.07469},
year = {2016}
}