Dynamical system analysis and observational constraints of cosmological models in mimetic gravity

Fritis A.; Villalobos-Silva, D; Vásquez Y.; Lopez-Caraballo, CH; Helo J.C.

Keywords: dark matter, dark energy, Cosmological datasets, Mimetic gravity, Alternative theories of gravity

Abstract

We study the dynamics of homogeneous and isotropic Friedmann–Lemaître–Robertson–Walker cosmological models with positive spatial curvature within the context of mimetic gravity theory by employing dynamical system techniques. Our analysis yields phase-space trajectories that describe physically relevant solutions, capturing various stages of cosmic evolution. We also employ Bayesian statistical analysis to constrain the cosmological parameters of the models, utilizing data from Type Ia supernovae and Hubble parameter data sets. The observational data sets provide support for the viability of mimetic gravity models, which can effectively describe the late-time accelerated expansion of the universe.

Más información

Título según WOS: Dynamical system analysis and observational constraints of cosmological models in mimetic gravity
Título según SCOPUS: Dynamical system analysis and observational constraints of cosmological models in mimetic gravity
Título de la Revista: Physics of the Dark Universe
Volumen: 46
Editorial: Elsevier B.V.
Fecha de publicación: 2024
Idioma: English
DOI:

10.1016/j.dark.2024.101650

Notas: ISI, SCOPUS