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Communication Dans Un Congrès Année : 2015

Second Order Virial Expansion for an Atomic Gas in Harmonic Waveguides

Résumé

We study the virial expansion for a quantum gas in a 1D or a 2D atomic waveguide. We use a two-channel Hamiltonian which takes into account the coherent coupling between atoms and molecules near a possible Feshbach resonance. We focus on the second order virial coefficient by using a diagrammatic approach. We derive the phase-shift in a multimode regime of the waveguide and deduce a Beth-Uhlenbeck formula taking into account the presence of the molecules and of the external trap.
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Dates et versions

hal-01225568 , version 1 (06-11-2015)

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  • HAL Id : hal-01225568 , version 1

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Tom Kristensen, Xavier Leyronas, Ludovic Pricoupenko. Second Order Virial Expansion for an Atomic Gas in Harmonic Waveguides. 24th International Laser Physics Workshop, Aug 2015, Shanghai, China. ⟨hal-01225568⟩
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