BICEP2 in corpuscular description of inflation

G. Dvali, C. Gomez

    Research output: Contribution to journalArticle

    Abstract

    A corpuscular quantum description of inflation shows that there is no fundamental problem with trans-Planckian excursions of the inflaton field up to about 100 Planck masses, with the upper bound coming from the corpuscular quantum effects. In this description, the r parameter measures the ratio of occupation numbers of gravitons versus inflatons, which, according to BICEP2, was roughly a half at the time of 60 e-foldings prior to the end of inflation. We stress that in a non-Wilsonian UV self-completion of gravity, any trans-Planckian mode coupled to the inflaton is a black hole. Unlike the Wilsonian case, integrating them out gives an exponentially suppressed effect and is unable to prevent trans-Planckian excursions of the inflaton field.

    Original languageEnglish (US)
    Pages (from-to)525-527
    Number of pages3
    JournalJournal of Experimental and Theoretical Physics
    Volume120
    Issue number3
    DOIs
    StatePublished - Mar 1 2015

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    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    BICEP2 in corpuscular description of inflation. / Dvali, G.; Gomez, C.

    In: Journal of Experimental and Theoretical Physics, Vol. 120, No. 3, 01.03.2015, p. 525-527.

    Research output: Contribution to journalArticle

    Dvali, G. ; Gomez, C. / BICEP2 in corpuscular description of inflation. In: Journal of Experimental and Theoretical Physics. 2015 ; Vol. 120, No. 3. pp. 525-527.
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