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Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2016

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

Résumé

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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Dates et versions

hal-01290475 , version 1 (18-03-2016)
hal-01290475 , version 2 (04-07-2016)

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Tom Kristensen, Xavier Leyronas, Ludovic Pricoupenko. Second-order virial expansion for an atomic gas in a harmonic waveguide. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2016, 93 (6), pp.063636. ⟨10.1103/PhysRevA.93.063636⟩. ⟨hal-01290475v2⟩
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