Is it possible to observationally distinguish adiabatic quartessence from [lambda]CDM ?
The equation of state (EOS) in quartessence models interpolates between two stages: p≃0 at high energy densities and p≈−ρ at small ones. In the quartessence models analyzed up to now, the EOS is convex, implying increasing adiabatic sound speed (c2s) as the energy density decreases in an expanding u...
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| Main Author: | |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
27 September 2006
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2006, Volume: 74, Issue: 6, Pages: 063524 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.74.063524 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevD.74.063524 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.74.063524 
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| Author Notes: | L. Amendola, M. Makler, R.R.R. Reis, and I. Waga |
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