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

被引：0

作者：

Fritis, Alberto ^{[1
]}

Villalobos-Silva, Daniel ^{[1
]}

Vasquez, Yerko ^{[1
]}

Lopez-Caraballo, Carlos H. ^{[2
,3
]}

Helo, Juan Carlos ^{[1
,4
]}

机构：

[1] Univ La Serena, Fac Ciencias, Dept Fis, Ave Cisternas 1200, La Serena, Chile

[2] Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Tenerife, Spain

[3] Univ La Laguna, Dept Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain

[4] Millennium Inst Subatom Phys High Energy Frontier, Fernandez Concha 700, Santiago, Chile

来源：

PHYSICS OF THE DARK UNIVERSE | 2024年 / 46卷

关键词：

Dark matter; Dark energy; Cosmological datasets; Mimetic gravity; Alternative theories of gravity; HUBBLE CONSTANT; DARK ENERGY; SUPERNOVA; PANTHEON; PARAMETER; IA; ANISOTROPY; CURVATURE; DISTANCES; INFLATION;

D O I：

10.1016/j.dark.2024.101650

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the dynamics of homogeneous and isotropic Friedmann-Lema & icirc;tre-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.

引用

页数：24

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