Mass screening in modified gravity

Gregory Gabadadze, Alberto Iglesias

    Research output: Contribution to journalArticle

    Abstract

    Models of modified gravity introduce extra degrees of freedom, which for a consistency with the data, should be suppressed at observable scales. In the models that share properties of massive gravity such a suppression is due to nonlinear interactions: an isolated massive astrophysical object creates a halo of a nonzero curvature around it, shielding its vicinity from the influence of the extra degrees of freedom. We emphasize that the very same halo leads to a screening of the gravitational mass of the object, as seen by an observer beyond the halo. We discuss the case when the screening could be very significant and may rule out, or render the models observationally interesting.

    Original languageEnglish (US)
    Article number154008
    JournalClassical and Quantum Gravity
    Volume25
    Issue number15
    DOIs
    StatePublished - Aug 7 2008

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    halos
    screening
    gravitation
    degrees of freedom
    shielding
    astrophysics
    curvature
    retarding
    interactions

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Mass screening in modified gravity. / Gabadadze, Gregory; Iglesias, Alberto.

    In: Classical and Quantum Gravity, Vol. 25, No. 15, 154008, 07.08.2008.

    Research output: Contribution to journalArticle

    Gabadadze, Gregory ; Iglesias, Alberto. / Mass screening in modified gravity. In: Classical and Quantum Gravity. 2008 ; Vol. 25, No. 15.
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