Interacting Chaplygin gas
Journal Article
·
· Physical Review. D, Particles Fields
- Department of Astronomy, Beijing Normal University, Beijing 100875 (China)
We investigate a kind of interacting Chaplygin gas model in which the Chaplygin gas plays the role of dark energy and interacts with cold dark matter particles. We find that there exists a stable scaling solution at late times with the Universe evolving into a phase of steady state. Furthermore, the effective equation of state of Chaplygin gas may cross the so-called phantom divide w=-1. The above results are derived from continuity equations, which means that they are independent of any gravity theories. Assuming standard general relativity and a spatially flat Friedamnn-Robertson-Walker (FRW) metric, we also find the deceleration parameter is well consistent with current observations.
- OSTI ID:
- 20776735
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 4 Vol. 73; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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