Phantom Cosmological Model with Observational Constraints in f(Q)$f(Q)$ Gravity
Sign Up to like & getrecommendations! Published in 2022 at "Annalen der Physik"
DOI: 10.1002/andp.202200626
Abstract: In this paper, the cosmological model of the Universe has been presented in f(Q)$f(Q)$ gravity and the parameters are constrained from the cosmological data sets. At the beginning, a well motivated form of f(Q)=α+βQn$f(Q) =… read more here.
Keywords: gravity; phantom cosmological; cosmological model; model observational ... See more keywords
Constraints on Janus Cosmological model from recent observations of supernovae type Ia
Sign Up to like & getrecommendations! Published in 2018 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-018-3365-3
Abstract: From our exact solution of the Janus Cosmological equation we derive the relation of the predicted magnitude of distant sources versus their red shift. The comparison, through this one free parameter model, to the available… read more here.
Keywords: model recent; janus cosmological; model; cosmological model ... See more keywords
Phase transition of cosmological model with statistical techniques
Sign Up to like & getrecommendations! Published in 2020 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-020-03843-0
Abstract: In the present communication, we investigated flat Friedmann-Lemaitre-Robertson-Walker mathematical model of universe in $f (R,T )$ theory of gravity with bulk viscous fluid as a source of energy. A system of modified field equations with… read more here.
Keywords: phase transition; transition cosmological; model; cosmological model ... See more keywords
Class of Exact Solutions for a Cosmological Model of Unified Gravitational and Quintessence Fields
Sign Up to like & getrecommendations! Published in 2017 at "Foundations of Physics"
DOI: 10.1007/s10701-017-0091-6
Abstract: A new approach to tackle Einstein equations for an isotropic and homogeneous Friedmann–Robertson–Walker Universe in the presence of a quintessence scalar field is devised. It provides a way to get a simple exact solution to… read more here.
Keywords: class exact; quintessence; solution; cosmological model ... See more keywords
Itô versus Stratonovich in a stochastic cosmological model
Sign Up to like & getrecommendations! Published in 2022 at "Letters in Mathematical Physics"
DOI: 10.1007/s11005-022-01503-8
Abstract: In this work, we study a stochastic version of the Friedmann acceleration equation. This model has been proposed in the cosmology literature as a possible explanation of the uncertainty found in the experimental quantification of… read more here.
Keywords: versus stratonovich; cosmological model; cosmology; model ... See more keywords
Qualitative and Numerical Analysis of the Cosmological Model with a Phantom Scalar Field
Sign Up to like & getrecommendations! Published in 2017 at "Russian Physics Journal"
DOI: 10.1007/s11182-017-1016-8
Abstract: The cosmological model based on the model of vacuum with a phantom scalar field is qualitatively analyzed. read more here.
Keywords: qualitative numerical; scalar field; phantom scalar; model ... See more keywords
Qualitative and Numerical Analysis of a Cosmological Model Based on an Asymmetric Scalar Doublet with Minimal Couplings. I. Qualitative Analysis of the Model
Sign Up to like & getrecommendations! Published in 2018 at "Russian Physics Journal"
DOI: 10.1007/s11182-018-1500-9
Abstract: A qualitative analysis of a cosmological model based on the asymmetric scalar doublet classical + phantom scalar field with minimal interaction is performed. It is shown that depending on the parameters of the model, the… read more here.
Keywords: qualitative analysis; model based; analysis; analysis cosmological ... See more keywords
Qualitative and Numerical Analysis of a Cosmological Model Based on an Asymmetric Scalar Doublet with Minimal Connections. III. Multiply-Connected Factor and Character of the Singular Points
Sign Up to like & getrecommendations! Published in 2019 at "Russian Physics Journal"
DOI: 10.1007/s11182-019-01706-y
Abstract: On the basis of a qualitative and numerical analysis of a cosmological model based on an asymmetric scalar doublet of nonlinear, minimally interacting scalar fields, both classical and phantom, the behavior of the model near… read more here.
Keywords: qualitative numerical; numerical analysis; analysis cosmological; model ... See more keywords
Hypersurface-homogeneous modified holographic Ricci dark energy cosmological model by hybrid expansion law in Saez–Ballester theory of gravitation
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Astrophysics and Astronomy"
DOI: 10.1007/s12036-019-9591-4
Abstract: The main motive of this investigation is to study the behavior of cosmological model in the presence of matter and a modified holographic Ricci dark energy for homogeneous hypersurface in the scalar tensor theory of… read more here.
Keywords: expansion; holographic ricci; model; cosmological model ... See more keywords
Dynamics of Bianchi type- $$\hbox {VI}_{0}$$ VI 0 anisotropic dark energy cosmological model with massive scalar field in Lyra manifold
Sign Up to like & getrecommendations! Published in 2021 at "Indian Journal of Physics"
DOI: 10.1007/s12648-021-02016-1
Abstract: The paper deals with the study of anisotropic dark energy and massive scalar field in the evolution of spatially homogeneous Bianchi type- $$\hbox {VI}_{0}$$ VI 0 cosmological model in the framework of Lyra geometry. Exact… read more here.
Keywords: model; dark energy; anisotropic dark; cosmological model ... See more keywords
Dynamical analysis with thermodynamic aspects of anisotropic dark energy bounce cosmological model in f(R, G) gravity
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DOI: 10.1016/j.newast.2020.101464
Abstract: Abstract Present analysis dedicated to the dynamical investigation of anisotropic dark energy LRS Bianchi type-I cosmological model in the context of modified gravity in which Langrangian be the arbitrary function of Ricci scalar and Gouss-Bonnet… read more here.
Keywords: anisotropic dark; model; dark energy; cosmological model ... See more keywords