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

Han Pu; Weiping Zhang; Martin Wilkens; Pierre Meystre

doi:10.1103/PhysRevLett.88.070408

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

Han Pu, Weiping Zhang, Martin Wilkens, Pierre Meystre

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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 language	English (US)
Article number	070408
Pages (from-to)	704081-704084
Number of pages	4
Journal	Physical review letters
Volume	88
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.88.070408
State	Published - Feb 18 2002
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.88.070408

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title = "Phonon spectrum and dynamical stability of a dilute quantum degenerate Bose-Fermi mixture",

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.",

author = "Han Pu and Weiping Zhang and Martin Wilkens and Pierre Meystre",

year = "2002",

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doi = "10.1103/PhysRevLett.88.070408",

language = "English (US)",

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AU - Pu, Han

AU - Zhang, Weiping

AU - Wilkens, Martin

AU - Meystre, Pierre

PY - 2002/2/18

Y1 - 2002/2/18

N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevLett.88.070408

DO - 10.1103/PhysRevLett.88.070408

M3 - Article

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EP - 704084

JO - Physical review letters

JF - Physical review letters

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

Abstract

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