%0 Journal Article
%T Nonlocal theories of gravity: the flat space propagator
%A Tirthabir Biswas
%A Tomi Koivisto
%A Anupam Mazumdar
%J Physics
%D 2013
%I arXiv
%X It was recently found that there are classes of nonlocal gravity theories that are free of ghosts and singularities in their Newtonian limit [PRL, 108 (2012), 031101]. In these proceedings, a detailed and pedagogical derivation of a main result, the flat space propagator for an arbitrary covariant metric theory of gravitation, is presented. The result is applied to analyse f(R) models, Gauss-Bonnet theory, Weyl-squared gravity and the potentially asymptotically free nonlocal theories.
%U http://arxiv.org/abs/1302.0532v2