Collective oscillations of a Bose-Fermi mixture: Effect of unequal mass of Bose and Fermi particles

Details Collective oscillations of a Bose-Fermi mixture: Effect of unequal mass of Bose and Fermi particles Collective oscillations of a Bose-Fermi mixture: Effect of unequal mass of Bose and Fermi particles

2007-04-26

arxiv.org/abs/0704.3483v1

Physics

Condensed Matter

Other Condensed Matter

15 pages, 4 figures

Scientific paper

10.1103/PhysRevA.76.023611

We investigate the effect of different mass of a Bose- and a Fermi-particle on the collective oscillations of the degenerate boson-fermion mixtures. In particular we consider the monopole and the quadrupole modes of the oscillations and study their characters and the frequencies by using variational-sum-rule approach. We find that for both the modes there exists a critical value of the ratio of boson-fermion mass below and above which the character and the frequency of the respective modes are significantly different.

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