Ultraviolet complete Lorentz-invariant theory with superluminal signal propagation

Patrick Cooper, Sergei Dubovsky, Ali Mohsen

    Research output: Contribution to journalArticlepeer-review


    We describe a UV complete asymptotically fragile Lorentz-invariant theory exhibiting superluminal signal propagation. Its low energy effective action contains "wrong" sign higher dimensional operators. Nevertheless, the theory gives rise to an S matrix, which is defined at all energies. As expected for a nonlocal theory, the corresponding scattering amplitudes are not exponentially bounded on the physical sheet, but otherwise are healthy. We study some of the physical consequences of this S matrix.

    Original languageEnglish (US)
    Article number084044
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Issue number8
    StatePublished - Apr 9 2014

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Physics and Astronomy (miscellaneous)


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