Bi-metric theory of gravity from the non-chiral Plebanski action
High Energy Physics - Theory
2011-02-28 v2 General Relativity and Quantum Cosmology
Abstract
We study a modification of the Plebanski action for general relativity, which leads to a modified theory of gravity with eight degrees of freedom. We show how the action can be recasted as a bi-metric theory of gravity, and expanding around a bi-flat background we identify the six extra degrees of freedom with a second, massive graviton and a scalar mode.
Keywords
Cite
@article{arxiv.1003.4701,
title = {Bi-metric theory of gravity from the non-chiral Plebanski action},
author = {Simone Speziale},
journal= {arXiv preprint arXiv:1003.4701},
year = {2011}
}
Comments
28 pages. v2 minor typos corrected