Kantowski–Sachs bulk viscous cosmological model in a scalar–tensor theory of gravitation

Reddy, D. R. K.; Bharathi, D.; Lakshmi, G. Vijaya

doi:10.1007/s10509-014-1857-3

Cited by 5 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence in order to solve this inconsistent system we need two additional constraints. Many researchers have used a constant deceleration parameter to obtain the solutions of the model which gives a power law for the metric potentials [46][47][48][49][50]. The positive value of the deceleration parameter represents the early decelerated phase of the universe, whereas the negative value of the deceleration parameter yields the acceleration phase of the universe.…”

Section: Solution Of Field Equationsmentioning

confidence: 99%

FRW type Kaluza–Klein modified holographic Ricci dark energy models in Brans–Dicke theory of gravitation

Aditya

Reddy

2018

Eur. Phys. J. C

Self Cite

View full text Add to dashboard Cite

In this paper, we investigate non-Ricci, noncompact Friedmann-Robertson-Walker type Kaluza-Klein cosmology in the presence of pressureless matter and modified holographic Ricci dark energy in the frame work of Brans and Dicke (Phys Rev 124:965, 1961) scalar-tensor theory of gravitation. We solve the field equations of this theory using a hybrid expansion law for the five dimensional scale factor. We have also used a power law and a form of logarithmic function of the scale factor for the Brans-Dicke scalar field. Consequently, we obtain two interesting cosmological models of the Kaluza-Klein universe. We have evaluated the cosmological parameters, namely, the equation of state parameter, the deceleration parameter, and the density parameters. To check the stability of our models we use the squared speed of sound. Some well-known cosmological (ω de -ω de and statefinder) planes are constructed for our models. We have also analyzed the physical behavior of these parameters through graphical representation. It is observed that the FRW type Kaluza-Klein dark energy models presented are compatible with the present day cosmological observations.

show abstract

Section: Solution Of Field Equationsmentioning

confidence: 99%

FRW type Kaluza–Klein modified holographic Ricci dark energy models in Brans–Dicke theory of gravitation

Aditya

Reddy

2018

Eur. Phys. J. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…[32] have obtained LRS Bianchi type-I dark energy cosmological model in Brans-Dicke theory of gravitation. [33] have studied Kantowski-Sachs bulk viscous string cosmological model in Brans-Dicke theory of gravitation. Recently, [34], [35], [36] have discussed different aspects in this scalar tensor theory.…”

Section: Introductionmentioning

confidence: 99%

Two Fluid Scenario for Axially Symmetric Dark Energy Cosmological Models in Brans-Dicke Theory of Gravitation

Rao¹,

Santhi²,

Rani³

2016

AdAp

View full text Add to dashboard Cite

Spatially homogeneous axially symmetric cosmological models filled with barotropic fluid and dark energy are obtained in a scalar tensor theory of gravitation proposed by Brans and Dicke (1961). In these models one fluid is the radiation distribution which represents the cosmic microwave background and the other fluid is the perfect fluid representing the matter content of the universe. Also some important features of the models, thus obtained, have been discussed.

show abstract

Viscous string anisotropic cosmological model in scalar–tensor theory

et al. 2020

View full text Add to dashboard Cite

Kantowski–Sachs bulk viscous cosmological model in a scalar–tensor theory of gravitation

Cited by 5 publications

References 24 publications

FRW type Kaluza–Klein modified holographic Ricci dark energy models in Brans–Dicke theory of gravitation

FRW type Kaluza–Klein modified holographic Ricci dark energy models in Brans–Dicke theory of gravitation

Two Fluid Scenario for Axially Symmetric Dark Energy Cosmological Models in Brans-Dicke Theory of Gravitation

Viscous string anisotropic cosmological model in scalar–tensor theory

Contact Info

Product

Resources

About