Ground-state properties of a dilute Bose-Fermi mixture

L. Viverit, S. Giorgini
2002 Physical Review A. Atomic, Molecular, and Optical Physics  
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
more » ... se of mixtures with attractive interspecies interaction.
doi:10.1103/physreva.66.063604 fatcat:idnztgfmhzellenmpiyqn24fh4