Tachyonic dark matter

Paul Davies

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)


    Recent attempts to explain the dark matter and energy content of the universe have involved some radical extensions of standard physics, including quintessence, phantom energy, additional space dimensions, and variations in the speed of light. In this paper I consider the possibility that some dark matter might be in the form of tachyons. I show that, subject to some reasonable assumptions, a tachyonic cosmological fluid would produce distinctive effects, such as a surge in quantum vacuum energy and particle creation, and a change in the conventional temperature-time relation for the normal cosmological material. Possible observational consequences are discussed.
    Original languageEnglish
    Pages (from-to)141-149
    Number of pages9
    JournalInternational Journal of Theoretical Physics
    Issue number1
    Publication statusPublished - 2004


    • Cosmological models
    • Dark matter
    • Tachyons


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