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

Tsutomu Kohayashi, Kei Ichi Maeda

Research output: Contribution to conferencePaper

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
Publication statusPublished - 2008 Dec 1
Event18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008 - Higashi-Hiroshima, Japan
Duration: 2008 Nov 172008 Nov 21

Conference

Conference18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008
CountryJapan
CityHigashi-Hiroshima
Period08/11/1708/11/21

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Relativistic stars in f(r) gravity, and absence thereof'. Together they form a unique fingerprint.

  • Cite this

    Kohayashi, T., & Maeda, K. I. (2008). Relativistic stars in f(r) gravity, and absence thereof. Paper presented at 18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008, Higashi-Hiroshima, Japan.