Extended analysis for the evolution of the cosmological history in Einstein-aether scalar field theory

Paliathanasis, Andronikos

doi:10.1103/physrevd.101.064008

Cited by 18 publications

(10 citation statements)

References 78 publications

(141 reference statements)

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“…Thus for a healthy theory to be viable, the critical point analysis should provide points where the universe will be accelerating and also these points to be stable. This analysis has been applied in various cosmological models, for instance see and references therein [130,131,[135][136][137][138][139][140][141][142][143][144][145][146][147] .…”

Section: Dynamical Evolutionmentioning

confidence: 99%

Dynamics in varying vacuum Finsler–Randers cosmology

et al. 2020

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In the context of Finsler-Randers theory we consider, for the first time, the cosmological scenario of the varying vacuum. In particular, we assume the existence of a cosmological fluid source described by an ideal fluid and the varying vacuum terms. We determine the cosmological history of this model by performing a detailed study on the dynamics of the field equations. We determine the limit of General Relativity, while we find new eras in the cosmological history provided by the geometrodynamical terms provided by the Finsler-Randers theory.

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Section: Dynamical Evolutionmentioning

confidence: 99%

Dynamics in varying vacuum Finsler–Randers cosmology

et al. 2020

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“…Thus for a healthy theory to be viable, the critical point analysis should provide points where the universe will be accelerating and also these points to be stable. This analysis has been applied in various cosmological models, for instance see and references therein [79,80,[84][85][86][87][88][89][90][91][92][93][94][95][96].…”

Section: Dynamical Evolutionmentioning

confidence: 99%

Dynamics in Varying vacuum Finsler-Randers Cosmology

Papagiannopoulos,

Basilakos,

Paliathanasis

et al. 2020

Preprint

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In the context of Finsler-Randers theory we consider, for a first time, the cosmological scenario of the varying vacuum. In particular, we assume the existence of a cosmological fluid source described by an ideal fluid and the varying vacuum terms. We determine the cosmological history of this model by performing a detailed study on the dynamics of the field equations. We determine the limit of General Relativity, while we find new eras in the cosmological history provided by the geometrodynamical terms provided by the Finsler-Randers theory.

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“…In addition this analysis provides important information about the initial condition problem. Such analysis has been widely studied in various gravitational models [55][56][57] while some studies in anisotropic universes can be found in [58][59][60][61][62][63][64]. The plan of the paper is as follows.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic Spacetimes in Chiral Scalar Field Cosmology

Giacomini,

Leach,

Leon

et al. 2021

Preprint

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We study the behaviour and the evolution of the cosmological field equations in an homogeneous and anisotropic spacetime with two scalar fields coupled in the kinetic term. Specifically, the kinetic energy for the scalar field Lagrangian is that of the Chiral model and defines a two-dimensional maximally symmetric space with negative curvature. For the background space we assume the locally rotational spacetime which describes the Bianchi I, the Bianchi III and the Kantowski-Sachs anisotropic spaces. We work on the H-normalization and we investigate the stationary points and their stability. For the exponential potential we find a new exact solution which describes an anisotropic inflationary solution. The anisotropic inflation is always unstable, while future attractors are the scaling inflationary solution or the hyperbolic inflation. For scalar field potential different from the exponential, the de Sitter universe exists.

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Extended analysis for the evolution of the cosmological history in Einstein-aether scalar field theory

Cited by 18 publications

References 78 publications

Dynamics in varying vacuum Finsler–Randers cosmology

Dynamics in varying vacuum Finsler–Randers cosmology

Dynamics in Varying vacuum Finsler-Randers Cosmology

Anisotropic Spacetimes in Chiral Scalar Field Cosmology

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