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Cited by 163

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Dark energy cosmology with generalized linear equation of state

Open access
Babichev, E, Dokuchaev, V, Eroshenko, Yu·2005·Classical and Quantum Gravity

Abstract

Dark energy with the usually used equation of state p = w ρ, where w = const < 0, is hydrodynamically unstable. To overcome this drawback, we consider the cosmology of a perfect fluid with a linear equation of state of a more general form p = α(ρ − ρ 0 ), where the constants α and ρ 0 are free parameters. This non-homogeneous linear equation of state provides the description of both hydrodynamically stable (α > 0) and unstable (α < 0) fluids. In particular, the considered cosmological model describes the hydrodynamically stable dark (and phantom) energy. The possible types of cosmological scenarios in this model are determined and classified in terms of attractors and unstable points by using phase trajectories analysis. For the dark energy case, some distinctive types of cosmological scenarios are possible: (i) the universe with the de Sitter attractor at late times, (ii) the bouncing universe, (iii) the universe with the big rip and with the anti-big rip. In the framework of a linear equation of state the universe filled with a phantom energy, w < −1, may have either the de Sitter attractor or the big rip.

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Metadata

Authors
Babichev, E., Dokuchaev, V, & Eroshenko, Y.
Venue
Classical and Quantum Gravity
Published
2004-12-08
Volume
22
Issue
1
Pages
143-154
ISSN
  • 0264-9381 (ISSN-L)
  • 1361-6382
OpenAlex
W1995015179
Cited by
163
References
6
FWCI
7.09
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Dark energy cosmology with generalized linear equation of state. https://app.cochat.ai/papers/10.1088/0264-9381/22/1/010
The paper
Babichev, E., Dokuchaev, V, & Eroshenko, Y. (2005). Dark energy cosmology with generalized linear equation of state. Classical and Quantum Gravity. https://doi.org/10.1088/0264-9381/22/1/010

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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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