Reconstructing mimetic cosmology

2020/09/30 by Víctor H. Cárdenas, Miguel Cruz, Samuel Lepe +1
Physics and Astronomy · #A priori and a posteriori #Black Holes and Theoretical Physics #Cosmological model #Cosmology #Cosmology and Gravitation Theories #Dark energy #Noncommutative and Quantum Gravity Theories #Parametrization (atmospheric modeling) #Redshift #Scalar (mathematics) #Scalar field #gr-qc

paper · pdf · doi:10.1016/j.dark.2021.100775

published as Phys. Dark Univ. 31, 100775 (2021) · Improved version, 8 pages, 5 figures. Accepted for publication in Physics of the Dark Universe

openalex created_date 2020/09/11 · openalex publication_date 2021/01/01 · arxiv created 2021/01/18 · arxiv updated 2021/01/29 · openalex updated_date 2026/08/05

Abstract

We explore the mimetic gravity formulation with the inclusion of a scalar field potential namely, V(ϕ). However, we are not considering any \it a priori specific form this term. By means of the Chevallier-Polarski-Linder parametrization for the parameter state of the fluid we can construct an explicit function for such potential in terms of the cosmological redshift and obtain analytical solutions in the mimetic gravity approach. We revise some cosmological implications of these results and additionally we perform a numerical reconstruction for the potential V as a function of the mimetic scalar field, ϕ.

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