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

Tsutomu Kobayashi, Kei Ichi Maeda

Research output: Contribution to journalArticle

117 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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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