Comment on "Model for Gravity at Large Distances"
arXiv:1012.4207
Abstract
We correct a sign mistake in the work mentioned in the title; explore consequences on energy conditions in the relevant context, and make a suggestion on the introduced parameter.
We have been informed on Dec.22, 2010 that an erratum was sent to PRL before we wrote the present comment. Due to a communication problem we were unaware of this fact. But we believe our comment goes beyond a correction, and adds to the physics