Making sense of the bizarre behavior of horizons in the McVittie spacetime

The bizarre behavior of the apparent (black hole and cosmological) horizons of the McVittie spacetime is discussed using, as an analogy, the Schwarzschild-de Si tier-Kottier spacetime (which is a special case of McVittie anyway). Fora dust-dominated "background" universe, a black hole cann...

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Bibliographic Details
Published in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2012-04, Vol.85 (8), Article 083526
Main Authors: Faraoni, Valerio, Zambrano Moreno, Andres F., Nandra, Roshina
Format: Article
Language:English
Subjects:
Analogies
Cosmology
Gravitation
Horizon
Silicon
Universe
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Summary:The bizarre behavior of the apparent (black hole and cosmological) horizons of the McVittie spacetime is discussed using, as an analogy, the Schwarzschild-de Si tier-Kottier spacetime (which is a special case of McVittie anyway). Fora dust-dominated "background" universe, a black hole cannot exist at early times because its (apparent) horizon would be larger than the cosmological (apparent) horizon. A phantom-dominated background universe causes this situation, and the horizon behavior, to be time-reversed.
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.85.083526