Oct 21 (Wed), 14:15 in A315
Bimetric variational formalism was introduced a while ago to construct novel bimetric gravity models. In these models an affine connection is generated by an additional tensor field which is independent of the physical metric. In this talk I will describe the ideas behind the bimetric variational formalism and some results preceding our work (in JCAP05(2015)021). Namely, we addressed the issue of ghosts plaguing many bimetric models. Previous work had hinted of a possibility of removing such unstable degrees of freedom from these theories. I will show how using the ADM decomposition it is possible to study these models and the behaviour of their degrees of freedom.