1. Model-Independent Dark Energy Differentiation with the Integrated Sachs-Wolfe Effect
- Author
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Carlo Ungarelli, Pier Stefano Corasaniti, Bruce A. Bassett, Edmund J. Copeland, Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)
- Subjects
Physics ,[PHYS]Physics [physics] ,010308 nuclear & particles physics ,Equation of state (cosmology) ,Hot dark matter ,Scalar field dark matter ,General Physics and Astronomy ,Lambda-CDM model ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,01 natural sciences ,Thermodynamics of the universe ,0103 physical sciences ,Dark energy ,010303 astronomy & astrophysics ,Dark fluid ,Quintessence - Abstract
5 pages, 5 figures; International audience; We study the integrated Sachs-Wolfe (ISW) effect using a model-independent parameterization of the dark energy equation of state. Cosmic variance severely restricts the class of models distinguishable from Lambda-CDM. In particular if the present value of the equation of state satisfies w_Q^o
- Published
- 2003
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