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arXiv · 1603.07469

Second-order virial expansion for an atomic gas in a harmonic waveguide

Tom Kristensen·Xavier Leyronas·Ludovic Pricoupenko
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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.

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Tom Kristensen, Xavier Leyronas, Ludovic Pricoupenko. 2016-03-24. Second-order virial expansion for an atomic gas in a harmonic waveguide. https://doi.org/10.1103/physreva.93.063636

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