On massive gravitons in 2+1 dimensions
High Energy Physics - Theory
2014-11-20 v2
Abstract
The Fierz-Pauli (FP) free field theory for massive spin 2 particles can be extended, in a spacetime of (1+2) dimensions (3D), to a generally covariant parity-preserving interacting field theory, in at least two ways. One is "new massive gravity" (NMG), with an action that involves curvature-squared terms. Another is 3D "bigravity", which involves non-linear couplings of the FP tensor field to 3D Einstein-Hilbert gravity. We review the proof of the linearized equivalence of both "massive 3D gravity" theories to FP theory, and we comment on their similarities and differences.
Keywords
Cite
@article{arxiv.0912.2944,
title = {On massive gravitons in 2+1 dimensions},
author = {Eric Bergshoeff and Olaf Hohm and Paul Townsend},
journal= {arXiv preprint arXiv:0912.2944},
year = {2014}
}
Comments
6 pages, to appear in the proceedings of the Spanish Relativity Meeting ERE2009, Bilbao; minor changes, reference added