Test of the Chevallier-Polarski-Linder parametrization for rapid dark energy equation of state transitions
| Autor: | J. M. Virey, Sebastian Linden |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Equation of state 010308 nuclear & particles physics Cosmic microwave background Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Parameter space Space (mathematics) 01 natural sciences Baryon Observational cosmology 0103 physical sciences Dark energy 010303 astronomy & astrophysics Parametrization |
| Zdroj: | Physical Review D. 78 |
| ISSN: | 1550-2368 1550-7998 |
| DOI: | 10.1103/physrevd.78.023526 |
| Popis: | We test the robustness and flexibility of the Chevallier-Polarski-Linder (CPL) parametrization of the dark energy equation of state w(z)=w{sub 0}+w{sub a}(z/1+z) in recovering a four-parameter steplike fiducial model. We constrain the parameter space region of the underlying fiducial model where the CPL parametrization offers a reliable reconstruction. It turns out that non-negligible biases leak into the results for recent (z |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|