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Primordial Black Holes in an Accelerating Universe
- Source :
- Physics Letters B, Physics Letters B, Elsevier, 2002, 528, pp.193-198. ⟨10.1016/S0370-2693(02)01200-5⟩
- Publication Year :
- 2001
- Publisher :
- arXiv, 2001.
-
Abstract
- General expressions are given for the generation of Primordial Black Holes (PBH) in a universe with a presently accelerated expansion due to a(n effective) cosmological constant. We give expressions both for a powerlaw scalefree primordial spectrum and for spectra which are not of that type. Specializing to the case of a pure cosmological constant $\Lambda$ and assuming flatness, we show that a comological constant with $\Omega_{\Lambda,0}=0.7$ will decrease the mass variance at the PBH formation time by about 15% compared with a critical density universe.<br />Comment: 9 pages, uses LaTeX, version accepted in Phys. Lett. B, results unchanged
- Subjects :
- Physics
Nuclear and High Energy Physics
media_common.quotation_subject
Astrophysics (astro-ph)
FOS: Physical sciences
Primordial black hole
Cosmological constant
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
General Relativity and Quantum Cosmology (gr-qc)
Type (model theory)
Lambda
Omega
Universe
General Relativity and Quantum Cosmology
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]
Flatness (cosmology)
Constant (mathematics)
PACS: 04.62.+v
98.80.Cq
media_common
Subjects
Details
- ISSN :
- 03702693
- Database :
- OpenAIRE
- Journal :
- Physics Letters B, Physics Letters B, Elsevier, 2002, 528, pp.193-198. ⟨10.1016/S0370-2693(02)01200-5⟩
- Accession number :
- edsair.doi.dedup.....fafa56278d8288d7df9c77aba951c718
- Full Text :
- https://doi.org/10.48550/arxiv.astro-ph/0112328