Relativistic stars in f(R) gravity, and absence thereof

Tsutomu Kobayashi, Keiichi Maeda

    Research output: Contribution to journalArticle

    116 Citations (Scopus)

    Abstract

    Several f(R) modified gravity models have been proposed which realize the correct cosmological evolution and satisfy solar system and laboratory tests. Although nonrelativistic stellar configurations can be constructed, we argue that relativistic stars cannot be present in such f(R) theories. This problem appears due to the dynamics of the effective scalar degree of freedom in the strong gravity regime. Our claim thus raises doubts on the viability of f(R) models.

    Original languageEnglish
    Article number064019
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume78
    Issue number6
    DOIs
    Publication statusPublished - 2008 Sep 8

    Fingerprint

    Modified Gravity
    Gravity Model
    Viability
    Star
    Gravity
    Degree of freedom
    Scalar
    gravitation
    stars
    Configuration
    viability
    solar system
    degrees of freedom
    scalars
    configurations
    Model

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Nuclear and High Energy Physics
    • Mathematical Physics

    Cite this

    Relativistic stars in f(R) gravity, and absence thereof. / Kobayashi, Tsutomu; Maeda, Keiichi.

    In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 78, No. 6, 064019, 08.09.2008.

    Research output: Contribution to journalArticle

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