Scalar graviton as dark matter

Abstract

In the report, the theory of unimodular bimode gravity built on principles of unimodular gauge invariance/relativity and general covariance is exposed. Besides the massless tensor graviton of General Relativity, the theory includes an (almost) massless scalar graviton treated as the gravitational dark matter. A spherically symmetric vacuum solution, describing the coherent scalar-graviton field for the soft-core dark halos with the asymptotically flat rotation curves, is demonstrated.

Comments: 6 pages. Report presented at the Intern. Session-Conference of SNP DFS RAS "Physics of Fundamental Interactions", Protvino, 5-8 November 2013