Viability criterion for modified gravity with an extra force

Valerio Faraoni
Phys. Rev. D 76, 127501 – Published 17 December 2007

Abstract

A recently proposed theory of modified gravity with an explicit anomalous coupling of the Ricci curvature to matter is discussed, and an inequality is derived which expresses a necessary and sufficient condition to avoid the notorious Dolgov-Kawasaki instability.

  • Received 21 July 2007

DOI:https://doi.org/10.1103/PhysRevD.76.127501

©2007 American Physical Society

Authors & Affiliations

Valerio Faraoni*

  • Physics Department, Bishop’s University, Sherbrooke, Québec, Canada J1M 0C8

  • *vfaraoni@ubishops.ca

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Issue

Vol. 76, Iss. 12 — 15 December 2007

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