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Letter: Density Perturbations in a Universe Dominated by the Chaplygin Gas
Open accessAbstract
We study the fate of density perturbations in a Universe dominate by the Chaplygin gas, which exhibit negative pressure. In opposition to other models of perfect fluid with negative pressure, there is no instability in the small wavelength limit, due to the fact that the sound velocity for the Chaplygin gas is positive. We show that it is possible to obtain the value for the density contrast observed in large scale structure of the Universe by fixing a free parameter in the equation of state of this gas. The negative character of pressure must be significant only very recently.
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Cites
Measurements of Ω and Λ from 42 High‐Redshift Supernovae
Perlmutter, S., Aldering, G., Goldhaber, G., Knop, R. A., Nugent, P., Castro, P. G., Deustua, S., Fabbro, S., Goobar, A., Groom, D. E., et al. (1999) · The Astrophysical Journal · doi:10.1086/307221 · Cited by 18,062
Cited by
Generalized Chaplygin gas, accelerated expansion, and dark-energy-matter unification
Bento, M. C., Bertolami, O., & Sen, A. A. (2002) · Physical Review D · doi:10.1103/physrevd.66.043507 · Cited by 2,027
Quintom cosmology: Theoretical implications and observations
Cai, Y.-F., Saridakis, E. N., Setare, M. R., & Xia, J.-Q. (2010) · Physics Reports · doi:10.1016/j.physrep.2010.04.001 · Cited by 868
Can the Chaplygin gas be a plausible model for dark energy?
Gorini, V., Kamenshchik, A., & Moschella, U. (2003) · Physical Review D · doi:10.1103/physrevd.67.063509 · Cited by 511
The end of unified dark matter?
Sandvik, H. B., Tegmark, M., Zaldarriaga, M., & Waga, I. (2004) · Physical Review D · doi:10.1103/physrevd.69.123524 · Cited by 433
Holographic Chaplygin gas model
Setare, M. R. (2007) · Physics Letters B · doi:10.1016/j.physletb.2007.03.025 · Cited by 278
Metadata
- Authors
- Fabris, J. C., Gonçalves, S. V. B., & de Souza, P. E.
- Venue
- General Relativity and Gravitation
- Published
- 2002-01
- Volume
- 34
- Issue
- 1
- Pages
- 53-63
- ISSN
- 0001-7701 (ISSN-L)
- 1572-9532
- OpenAlex
- W1679245843
- Cited by
- 248
- References
- 1
- FWCI
- 10.58
- Type
- journal article
- Language
- en
- Open access
- green
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- Fabris, J. C., Gonçalves, S. V. B., & de Souza, P. E. (2002). Letter: Density Perturbations in a Universe Dominated by the Chaplygin Gas. General Relativity and Gravitation. https://doi.org/10.1023/a%3A1015266421750
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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