New Bi-Gravity from New Massive Garvity
High Energy Physics - Theory
2016-05-31 v3 General Relativity and Quantum Cosmology
Abstract
Using the action of three dimensional New Massive Gravity (NMG) we construct a new bi-gravity in three dimensions. This can be done by promoting the rank two auxiliary field appearing in the expression of NMG's action into a dynamical field. We show that small fluctuations around the AdS vacuum of the model are non-tachyonic and ghost free within certain range of the parameters of the model. We study central charges of the dual field theory and observe that in this range they are positive too. This suggests that the proposed model might be a consistent three dimensional bi-gravity.
Cite
@article{arxiv.1603.03270,
title = {New Bi-Gravity from New Massive Garvity},
author = {Amin Akhavan and Mohsen Alishahiha and Ali Naseh and Azadeh Nemati and Ahmad Shirzad},
journal= {arXiv preprint arXiv:1603.03270},
year = {2016}
}
Comments
28 pages, 2 figures, two appendices are added, typos fixed, journal version