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arXiv · 2107.04876

Studies on dark energy evolution

Daniela Grandon·Victor H. Cardenas
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Abstract

In this work we explore signatures of evolution for the dark energy density $X(z)=ρ_{de}(z)/ρ_{de}(0)$ using latest observations on SNIa and H(z). The models consist of parametrizations of the dark energy density and consequently a reconstruction for the EoS parameter w(z) as a function of redshift. Both parametrization methods using the SH0Es prior results in a small deviation from LCDM at 1$σ$ for $X(z)$. Extending the analysis up to 2$σ$, the evidence for evolution of $X(z)$ dilute in both cases. We have also studied an interacting dark model where this trend is also found.

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Daniela Grandon, Victor H. Cardenas. 2021-07-10. Studies on dark energy evolution. https://doi.org/10.1088/1361-6382%2Fac0357

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