Horava's quantum gravity illustrated by embedding diagrams of the Kehagias-Sfetsos spacetimes

• Possible astrophysical consequences of the Horava quantum gravity theory have been recently studied by several authors. They usually employ the Kehagias-Sfetsos (KS) spacetime which is a spherically symmetric vacuum solution of a specific version of Horava's gravity. The KS metric has several unusual geometrical properties that in the present article we examine by means of the often used technique of embedding diagrams. We pay particular attention to the transition between naked singularity and black-hole states, which is possible along some particular sequences of the KS metrics.

Ämnesord

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Nyckelord

Horava's gravity

Spherically symmetric KS solution

Optical geometry

Embedding

regular black-holes

heterotic string theory

lifshitz gravity

nonlinear electrodynamics

geometry

Astronomy & Astrophysics

Physics

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