Lp-Lq-Lr estimates and minimal decay regularity for compressible Euler-Maxwell equations

Jiang Xu, Naofumi Mori, Shuichi Kawashima

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    Due to the dissipative structure of regularity-loss, extra higher regularity than that for the global-in-time existence is usually imposed to obtain the optimal decay rates of classical solutions to dissipative systems. The aim of this paper is to seek the lowest regularity index for the optimal decay rate of L1(Rn)-L2(Rn). Consequently, a notion of minimal decay regularity for dissipative systems of regularity-loss is firstly proposed. To do this, we develop a new time-decay estimate of Lp(Rn)-Lq(Rn)-Lr(Rn) type by using the low-frequency and high-frequency analysis in Fourier spaces. As an application, for compressible Euler-Maxwell equations with the weaker dissipative mechanism, it is shown that the minimal decay regularity coincides with the critical regularity for global classical solutions. Moreover, the recent decay property for symmetric hyperbolic systems with non-symmetric dissipation is also extended to be the Lp-version.

    Original languageEnglish
    Pages (from-to)965-981
    Number of pages17
    JournalJournal des Mathematiques Pures et Appliquees
    Volume104
    Issue number5
    DOIs
    Publication statusPublished - Nov 2015

    All Science Journal Classification (ASJC) codes

    • General Mathematics
    • Applied Mathematics

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