Degravitation of the Cosmological Constant in Bigravity
General Relativity and Quantum Cosmology
2017-04-05 v2 High Energy Physics - Phenomenology
Abstract
In this article the phenomenon of degravitation of the cosmological constant is studied in the framework of bigravity. It is demonstrated that despite a sizable value of the cosmological constant its gravitational effect can be only mild. The bigravity framework is chosen for this demonstration as it leads to a consistent, ghost-free theory of massive gravity. We show that degravitation takes place in the limit where the physical graviton is dominantly a gauge invariant metric combination. We present and discuss several phenomenological consequences expected in this regime.
Keywords
Cite
@article{arxiv.1611.09385,
title = {Degravitation of the Cosmological Constant in Bigravity},
author = {Moritz Platscher and Juri Smirnov},
journal= {arXiv preprint arXiv:1611.09385},
year = {2017}
}
Comments
17 pages; v2 contains extended discussion on more general solutions; content matches published version