descriptionPublicationkeyboard_double_arrow_right Article , Preprint 11 Nov 2004Embargo end date: 01 Jan 2004 English Publisher:American Physical Society (APS)Journal:Physical Review D, volume 70 (issn: 1550-7998, eissn: 1550-2368,

Authors: CAPOZZIELLO, SALVATORE; MELCHIORRI A.; SCHIRONE A.;

doi: 10.1103/physrevd.70.101301 , 10.48550/arxiv.astro-ph/0408112

arXiv: http://arxiv.org/abs/astro-ph/0408112

handle: 11588/101690 , 11573/129733

Scaling dark energy

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Abstract

We investigate the possibility of a dark energy component that is scaling with epochs. A phenomenological model is introduced whose energy density depends on the redshift in such a way that a smooth transition among the three dominant phases of the universe evolution (radiation era, matter domination, asymptotic de Sitter state) is achieved. We use the WMAP cosmic microwave background data and the luminosity distances of Type Ia Supernovae to test whether this data can provide a signal for scaling.

5 pages 4 figures

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Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics

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