Ground-state properties of a dilute Bose-Fermi mixture

Details Ground-state properties of a dilute Bose-Fermi mixture Ground-state properties of a dilute Bose-Fermi mixture

2002-07-10

arxiv.org/abs/cond-mat/0207260v1

Physics

Condensed Matter

Statistical Mechanics

10 pages, 10 figures

Scientific paper

10.1103/PhysRevA.66.063604

We investigate the properties of a dilute boson-fermion mixture at zero temperature. The ground-state energy of the system is calculated to second order in the Bose-Fermi coupling constant. The Green's function formalism is applied to obtain results for the effect of Bose-Fermi interactions on the spectrum of phonon excitations, the momentum distribution, the condensate fraction and the superfluid density of the bosonic component. A quantitative discussion of these effects is presented in the case of mixtures with attractive interspecies interaction.

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