CAN THE CHAPLYGIN GAS BE A PLAUSIBLE MODEL FOR DARK ENERGY

By V. Gorini, A. Kamenshchik, U. Moschella. 2002

391 citations recorded by the source corpus.

In this note two cosmological models representing the flat Friedmann Universe filled with a Chaplygin fluid, with or without dust, are analyzed in terms of the recently proposed "statefinder" parameters. Trajectories of both models in the parameter plane are shown to be significantly different w.r.t. "quiessence" and "tracker" models. The generalized Chaplygin gas model with an equation of state of the form $p = -A/\rho^{\alpha}$ is also analyzed in terms of the statefinder parameters.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3134916d57ce02630b6dd1849a15dcc00f895d29

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. A. Kamenshchik
2. T. Buchert
3. V. Gorini
4. U. Moschella
5. V. Pasquier
6. S. Rasanen
7. K. Enqvist
8. Teppo Mattsson

In Nuclear and High Energy Physics

1. A. Kamenshchik
2. T. Buchert
3. V. Gorini
4. U. Moschella
5. V. Pasquier
6. S. Rasanen
7. K. Enqvist
8. Teppo Mattsson

Citations in the corpus

• Dark Energy from structure: a status report (2007, background): “s Universe [77], [179], [191], so that we need to head for closures with non–vanishing magnetic part. In this line, (iii) further studies of cosmic equations of state (like, e.g., the Chaplygin state [89]) are not only a clearcut way to close the averaged equations, but also a way to classify differ”
• Tachyons, scalar fields, and cosmology (2003, background): “The Chaplygin gas cosmological model was introduced in [28] and further developed in [29, 30, 31, 32] and many other papers.”