Phys. Rev. A 64, 023609 (2001) [4 pages]Collective modes in a dilute Bose-Fermi mixtureReceived 18 January 2001; published 18 July 2001 Here we study the collective excitations of a dilute spin-polarized Bose-Fermi mixture at zero temperature, considering, in particular, the features arising from the interaction between the two species. We show that a propagating zero-sound mode is possible for the fermions even when they do not interact among themselves. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.64.023609
DOI:
10.1103/PhysRevA.64.023609
PACS:
03.75.Fi, 67.60.-g, 67.55.Jd
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