TY  - JOUR
A1  - Pu, Han
A1  - Zhang, Weiping
A1  - Wilkens, Martin
A1  - Meystre, Pierre
T1  - Phonon Spectrum and Dynamical Stability of a Dilute Quantum Degenerate Bose-Fermi Mixture
N2  - We calculate the phonon excistation spectrum in a zero-temperature dilute boson-fermion gaseous mixture. We show how the sound velocity changes due to the boson-fermion interaction, and we determine the dynamical stability regime of a homogeneous mixture. We identify a resonant phonon-exchange interaction between the fermions as the physical mechanism leading to the instability.
Y1  - 2002
ER  -