Plasma instabilities in high electric fields

K. Morawetz, Antti-Pekka Jauho

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    Abstract

    We analyze nonequilibrium screening with nonequilibrium Green function techniques. By employing the generalized Kadanoff-Baym ansatz to relate the correlation function to the nonequilibrium distribution function, the latter of which is assumed to be a shifted Maxwellian, an analytically tractable expression is derived for the nonequilibrium dielectric function epsilon(K, omega). For certain values of momenta K and frequency omega, Imepsilon(K, omega) becomes negative, implying a plasma instability. This new instability exists only for strong electric fields, underlining its nonequilibrium origin.
    Original languageEnglish
    JournalPhysical Review E. Statistical, Nonlinear, and Soft Matter Physics
    Volume50
    Issue number1
    Pages (from-to)474-479
    ISSN1063-651X
    DOIs
    Publication statusPublished - 1994

    Bibliographical note

    Copyright (1994) by the American Physical Society.

    Keywords

    • SYSTEMS
    • SEMICONDUCTORS
    • QUANTUM TRANSPORT-EQUATIONS

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