Football shaped extra dimensions and the absence of self-tuning

Jaume Garriga, Massimo Porrati

    Research output: Contribution to journalArticle

    Abstract

    There have been some recent claims that brane-worlds of co-dimension two in a 6D bulk with compact extra dimensions may lead to self-tuning of the effective 4D cosmological constant. Here we show that if a phase transition occurs on a flat brane, so as to change its tension, then the brane will not remain flat. In other words, there is really no self-tuning in such models, which can in fact be understood in four-dimensional terms and are therefore subject to Weinberg's no-go theorem.

    Original languageEnglish (US)
    Pages (from-to)781-790
    Number of pages10
    JournalJournal of High Energy Physics
    Volume8
    Issue number8
    DOIs
    StatePublished - Aug 1 2004

    Keywords

    • Cosmology of Theories beyond the SM
    • Extra Large Dimensions
    • Field Theories in Higher Dimensions
    • p-branes

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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