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