On Instability of Certain Bi-Metric and Massive-Gravity Theories
General Relativity and Quantum Cosmology
2013-09-18 v2 High Energy Physics - Theory
Abstract
Stability about cosmological background solutions to the bi-metric Hassan-Rosen theory is studied. The results of this analysis are presented, and it is shown that a large class of cosmological backgrounds is classically unstable. This sets serious doubts on the physical viability of the Hassan-Rosen theory - and in turn also of the de Rham-Gadabaze-Tolley model, to which the mentioned theory is parent. A way to overcome this instability by means of curvature-type deformations is discussed.
Keywords
Cite
@article{arxiv.1208.1764,
title = {On Instability of Certain Bi-Metric and Massive-Gravity Theories},
author = {Florian Kuhnel},
journal= {arXiv preprint arXiv:1208.1764},
year = {2013}
}
Comments
4 pages, 2 figures; v2: minor changes to match PRD version