Nonrestoration of spontaneously broken [Formula presented] and [Formula presented] at high temperature

Gia Dvali, Alejandra Melfo, Goran Senjanović

    Research output: Contribution to journalArticlepeer-review


    The possibility of [Formula presented] and [Formula presented] violation at high temperature in models where these symmetries are spontaneously broken is investigated. It is found that in minimal models that include singlet fields, high [Formula presented] nonrestoration is possible for a wide range of parameters of the theory, in particular, in models of [Formula presented] violation with a [Formula presented]-odd Higgs field. The same holds true for the invisible axion version of the Peccei-Quinn mechanism. This can provide both a way out for the domain wall problem in these theories and the [Formula presented] violation required for baryogenesis. In the case of spontaneous [Formula presented] violation it turns out that high [Formula presented] nonrestoration requires going beyond the minimal model. The results are shown to hold true when next-to-leading order effects are considered.

    Original languageEnglish (US)
    Pages (from-to)7857-7866
    Number of pages10
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Issue number12
    StatePublished - 1996

    ASJC Scopus subject areas

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


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