Matter coupling in 3D "Minimal Massive Gravity"
Abstract
The "Minimal Massive Gravity" (MMG) model of massive gravity in three spacetime dimensions (which has the same anti-de Sitter (AdS) bulk properties as "Topologically Massive Gravity" but improved boundary properties) is coupled to matter. Consistency requires a particular matter source tensor, which is quadratic in the stress tensor. The consequences are explored for an ideal fluid in the context of asymptotically de-Sitter (dS) cosmological solutions, which bounce smoothly from contraction to expansion. Various vacuum solutions are also found, including warped-(A)dS, and (for special values of parameters) static black holes and an (A)dS2 x S1 vacuum.
Cite
@article{arxiv.1407.1264,
title = {Matter coupling in 3D "Minimal Massive Gravity"},
author = {Alex S. Arvanitakis and Alasdair J. Routh and Paul K. Townsend},
journal= {arXiv preprint arXiv:1407.1264},
year = {2015}
}
Comments
19 pages. v2 includes simplifications due to an improved parametrisation, and an explicit verification of the main result. Minor corrections made and additional references added in v3