2007/12/31 by E. Barausse, E Barausse, T. P. Sotiriou +3 · 3 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Quantum and Classical Electrodynamics #Relativity and Gravitational Theory #astro-ph #gr-qc #hep-ph
paper · pdf · doi:10.1088/0264-9381/25/10/105008
published as Class.Quant.Grav.25:105008,2008 · 15 pages. CQG in press. Part of the material moved to an appendix, discussion on the meV scale predictions of Palatini f(R) gravity added
arxiv created 2008/04/15 · openalex publication_date 2008/05/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
In a previous paper we showed that static spherically symmetric objects which, in the vicinity of their surface, are well described by a polytropic equation of state with 3/2 < Γ < 2 exhibit a curvature singularity in Palatini f ( R ) gravity. We argued that this casts serious doubt on the validity of Palatini f ( R ) gravity as a viable alternative to general relativity. In the present paper, we further investigate this characteristic of Palatini f ( R ) gravity in order to clarify its physical interpretation and consequences.