0806.2775 (Nicolas Boulanger et al.)

Non-linear parent action and dual gravity    [PDF]

Nicolas Boulanger, Olaf Hohm

We give a reformulation of non-linear Einstein gravity, which contains the
dual graviton together with the ordinary metric and a shift gauge field. The
metric does not enter through a `kinetic' Einstein-Hilbert term, but via
topological couplings, and so the theory does not lead to a doubling of degrees
of freedom. The field equations take the form of first-order duality relations.
We analyze the gauge symmetries and comment on their meaning with regard to the
E11 proposal.

View original: http://arxiv.org/abs/0806.2775