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

Tsutomu Kohayashi, Keiichi Maeda

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Several f(R) modified gravity models have been proposed which realize the correct cosmological evolution and satisfy solar system and laboratory tests. Although non- relativist.ic 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
    Title of host publicationProceedings of the 18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008
    Publication statusPublished - 2008
    Event18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008 - Higashi-Hiroshima
    Duration: 2008 Nov 172008 Nov 21

    Other

    Other18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008
    CityHigashi-Hiroshima
    Period08/11/1708/11/21

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    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

    Cite this

    Kohayashi, T., & Maeda, K. (2008). Relativistic stars in f(r) gravity, and absence thereof. In Proceedings of the 18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008