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Black Universes with Trapped Ghosts by Bronnikov, K. A.; Donskoy, E. V. is a scholarly article available to read on EtoBox.

What is Black Universes with Trapped Ghosts about?

A black universe is a nonsingular black hole where, beyond the horizon, there is an expanding, asymptotically isotropic universe. Such models have been previously found as solutions of general relativity with a phantom scalar field as a source of gravity and, without phantoms, in a brane world of RS2 type. Here we construct examples of static, spherically symmetric black-universe solutions in general relativity with a minimally coupled scalar field \phi whose kinetic energy is negative in a restricted strong-field region of space-time and positive outside it. Thus in such configurations a "ghost" is trapped in a small part of space, which may in principle explain why no ghosts are observed under usual conditions.

Author

Bronnikov, K. A.; Donskoy, E. V.

Published

2011

Language

EN