Degrees of Freedom in Massive Gravity
High Energy Physics - Theory
2013-02-20 v3 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We study in a systematic way a generic nonderivative (massive) deformation of general relativity using the Hamiltonian formalism. The number of propagating degrees of freedom is analyzed in a nonperturbative and background independent way. We show that the condition of having only five propagating degrees of freedom can be cast in a set of differential equations for the deforming potential. Though the conditions are rather restrictive, many solutions can be found.
Keywords
Cite
@article{arxiv.1204.1027,
title = {Degrees of Freedom in Massive Gravity},
author = {D. Comelli and M. Crisostomi and F. Nesti and L. Pilo},
journal= {arXiv preprint arXiv:1204.1027},
year = {2013}
}
Comments
5 pages. Final version published in PRD rapid communications