Speed of wave-front solutions to hyperbolic reaction-diffusion equations

Vicenç Méndez, Joaquim Fort, Jordi Farjas

    Research output: Contribution to journalArticleResearchpeer-review

    53 Citations (Scopus)

    Abstract

    The asymptotic speed problem of front solutions to hyperbolic reaction-diffusion (HRD) equations is studied in detail. We perform linear and variational analyses to obtain bounds for the speed. In contrast to what has been done in previous work, here we derive upper bounds in addition to lower ones in such a way that we can obtain improved bounds. For some functions it is possible to determine the speed without any uncertainty. This is also achieved for some systems of HRD (i.e., time-delayed Lotka-Volterra) equations that take into account the interaction among different species. An analytical analysis is performed for several systems of biological interest, and we find good agreement with the results of numerical simulations as well as with available observations for a system discussed recently.
    Original languageEnglish
    Pages (from-to)5231-5243
    JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
    Volume60
    Issue number5 A
    Publication statusPublished - 1 Nov 1999

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