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Perturbations of an Expanding Universe
Abstract
Perturbations of a spatially homogeneous isotropic universe are investigated in terms of small variations of the curvature. It is found that rotational perturbations die away. Density perturbations grow relatively to the background, but galaxies cannot be formed by the growth of perturbations that were initially small. In the steady-state universe small rotational and density perturbations die away. The behavior of gravitational radiation in expanding universes is also investigated. Its "energy density" decreases at the same rate as that of electromagnetic radiation, although its active gravitational effect is only half as great. If a small amount of viscosity is present, gravitational radiation will be completely absorbed in the steady-state universe but not in an evolutionary universe.
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Citations
Cited by
Theory of cosmological perturbations
Mukhanov, V (1992) · Physics Reports · doi:10.1016/0370-1573(92)90044-z · Cited by 3,608
Gauge-invariant cosmological perturbations
Bardeen, J. M. (1980) · Physical Review D · doi:10.1103/physrevd.22.1882 · Cited by 2,393
Fluctuations in the New Inflationary Universe
Guth, A. H., & Pi, S.-Y. (1982) · Physical Review Letters · doi:10.1103/physrevlett.49.1110 · Cited by 2,387
The pre-big bang scenario in string cosmology
Gasperini, M., & Veneziano, G. (2003) · Physics Reports · doi:10.1016/s0370-1573(02)00389-7 · Cited by 872
Fluctuations at the Threshold of Classical Cosmology
Harrison, E. R. (1970) · Physical Review D · doi:10.1103/physrevd.1.2726 · Cited by 574
Metadata
- Authors
- Hawking, S. W.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1966-08
- Volume
- 145
- Pages
- 544
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2080272424
- Cited by
- 420
- References
- 0
- FWCI
- 6.59
- Type
- journal article
- Language
- en
- Open access
- closed
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- Hawking, S. W. (1966). Perturbations of an Expanding Universe. The Astrophysical Journal. https://doi.org/10.1086/148793
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
