Phonon spectrum and dynamical stability of a dilute quantum degenerate Bose-Fermi mixture

Han Pu, Weiping Zhang, Martin Wilkens, Pierre Meystre

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

The phonon excitation spectrum in a dilute boson-fermion gaseous mixture was calculated. The dynamical stability regime of a homogeneous mixture was determined. The change in sound velocity due to the boson-fermion interaction was investigated. A resonant phonon-exchange interaction between the fermions was found to be the physical mechanism resulting in the instability.

Original languageEnglish (US)
Article number070408
Pages (from-to)704081-704084
Number of pages4
JournalPhysical review letters
Volume88
Issue number7
DOIs
StatePublished - Feb 18 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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