Exploring hints for dark energy density evolution in light of recent data

Physics Letters B

Víctor H. Cárdenas¹ 

[1] Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Gran Bretaña 1111, Valparaíso, Chile;

关键词: Cosmological parameters;    Cosmology: theory;   

DOI  :  10.1016/j.physletb.2015.08.064

来源: DOAJ

【 摘 要 】

Considering a quadratic parameterization of the dark energy density, we explore signatures of evolution using data from gas mass fraction in clusters, type Ia supernova, BAO and CMB. We find – excluding CMB data – a preference for an evolution of ρde(z) towards smaller values as the redshift increases, a result consistent with a recent study using the BAO DR11 data by Delubac et al. (2015).

【 授权许可】

Unknown