The Running of the Cosmological and the Newton Constant controlled by the Cosmological Event Horizon

Abstract

We study the renormalisation group running of the cosmological and the Newton constant, where the renormalisation scale is given by the inverse of the radius of the cosmological event horizon. In this framework, we discuss the future evolution of the universe, where we find stable de Sitter solutions, but also "big crunch"-like and "big rip"-like events, depending on the choice of the parameters in the model.

Comments: 14 pages, 7 figures, minor improvements, references added