Scalar-Tensor theories from $Λ(φ)$ Plebanski gravity

Details Scalar-Tensor theories from $Λ(φ)$ Plebanski gravity Scalar-Tensor theories from $Λ(φ)$ Plebanski gravity

2012-04-13

arxiv.org/abs/1204.3001v1

Physics

High Energy Physics

High Energy Physics - Theory

21 pages

Scientific paper

We study a modification of the Plebanski action, which generically corresponds to a bi-metric theory of gravity, and identify a subclass which is equivalent to the Bergmann-Wagoner-Nordtvedt class of scalar-tensor theories. In this manner, scalar-tensor theories are displayed as constrained BF theories. We find that in this subclass, there is no need to impose reality of the Urbantke metrics, as also the theory with real bivectors is a scalar-tensor theory with a real Lorentzian metric. Furthermore, while under the former reality conditions instabilities can arise from a wrong sign of the scalar mode kinetic term, we show that such problems do not appear if the bivectors are required to be real. Finally, we discuss how matter can be coupled to these theories. The phenomenology of scalar field dark matter arises naturally within this framework.

Affiliated with

Also associated with

No associations

Rating

Scalar-Tensor theories from $Λ(φ)$ Plebanski gravity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Scalar-Tensor theories from $Λ(φ)$ Plebanski gravity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scalar-Tensor theories from $Λ(φ)$ Plebanski gravity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-144212