Making sense of the bizarre behaviour of horizons in the McVittie spacetime
| Autor: | Andres F. Zambrano Moreno, Roshina Nandra, Valerio Faraoni |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Physics
Nuclear and High Energy Physics Spacetime 010308 nuclear & particles physics Event horizon Horizon media_common.quotation_subject Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) 01 natural sciences General Relativity and Quantum Cosmology Universe Particle horizon Black hole Theoretical physics Classical mechanics de Sitter–Schwarzschild metric Apparent horizon 0103 physical sciences 010306 general physics media_common |
| DOI: | 10.48550/arxiv.1202.0719 |
| Popis: | The bizarre behaviour of the apparent (black hole and cosmological) horizons of the McVittie spacetime is discussed using, as an analogy, the Schwarzschild-de Sitter-Kottler spacetime (which is a special case of McVittie anyway). For a 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 behaviour, to be time-reversed. Comment: 8 pages, 3 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|