Massive Unimodular Gravity
High Energy Physics - Theory
2020-06-16 v4 General Relativity and Quantum Cosmology
Abstract
A ghost free massive deformation of unimodular gravity (UG), in the spirit of {\em mimetic massive gravity}, is shown to exist. This construction avoids the no-go theorem for a Fierz-Pauli type of mass term in UG by giving up on Lorentz invariance. In our framework, the mimetic degree of freedom vanishes on-shell.
Keywords
Cite
@article{arxiv.1806.10507,
title = {Massive Unimodular Gravity},
author = {Enrique Alvarez and Jesus Anero and Guillermo Milans del Bosch and Raquel Santos-Garcia},
journal= {arXiv preprint arXiv:1806.10507},
year = {2020}
}
Comments
Several clarifications added. Published version. 11 pages