scholarly journals LRS Bianchi type-V universe with variable modified Chaplygin gas in a scalar–tensor theory of gravitation

2016 ◽  
Vol 94 (6) ◽  
pp. 578-582 ◽  
Author(s):  
M. Vijaya Santhi ◽  
V.U.M. Rao ◽  
Y. Aditya
Keyword(s):  
Bianchi Type ◽  
Chaplygin Gas ◽  
Scalar Tensor Theory ◽  
Modified Chaplygin Gas ◽  
Tensor Theory ◽  
Variable Modified Chaplygin Gas ◽  
Theory Of Gravitation ◽  
Bianchi Type V Universe ◽  
Type V ◽  
Bianchi Type V

The spatially homogeneous and anisotropic LRS Bianchi type-V Universe filled with variable modified Chaplygin gas in the framework of the Brans–Dicke (Brans and Dicke. Phys. Rev. 124, 925 (1961). doi:10.1103/PhysRev.124.925) scalar–tensor theory of gravitation has been studied. To obtain a determinate solution of the field equations we have used the condition that scalar field ([Formula: see text]) is a function of average scale factor. Some physical and kinematical properties of the model are discussed. We have also analyzed the stability of the solution.

Exact Brans-Dicke-Bianchi type-V solutions

1984 ◽  
Vol 96 (1) ◽  
pp. 183-189 ◽  
Author(s):  
D. Lorenz-Petzold
Keyword(s):  
Exact Solutions ◽  
Bianchi Type ◽  
Scalar Tensor Theory ◽  
Stiff Matter ◽  
Tensor Theory ◽  
Homogeneous Cosmological Models ◽  
Theory Of Gravitation ◽  
Spatially Homogeneous ◽  
Type V ◽  
Bianchi Type V

AbstractSpatially homogeneous cosmological models of the Bianchi type-V are considered in the Brans-Dicke scalar-tensor theory of gravitation. Exact solutions are given in the vacuum case as well as for models filled with dust, radiation or stiff matter.

The general vacuum Bianchi type-V solution in the Brans-Dicke theory

1984 ◽  
Vol 95 (1) ◽  
pp. 175-178 ◽  
Author(s):  
D. Lorenz-Petzold
Keyword(s):  
Bianchi Type ◽  
Coupling Parameter ◽  
A Priori ◽  
Scalar Tensor Theory ◽  
Theory Of Relativity ◽  
General Theory Of Relativity ◽  
Tensor Theory ◽  
General Vacuum ◽  
Type V ◽  
Bianchi Type V

Amongst the various modifications of the general theory of relativity (GRT), the scalar-tensor theory of Brans and Dicke (BDT) is treated most seriously ([2], [17], [13]). The BDT is consistent with observations as long as the coupling parameter ω between the scalar and tensor components of gravitation is about equal to or greater than 500 [18]. However, there are no a priori theoretical reasons for excluding other values of ω. In the limit ω → ∞, the BDT reduces to the GRT for a constant BDT-scalar field Φ

scholarly journals Bianchi type-V modified holographic Ricci dark energy models in Saez–Ballester theory of gravitation

2017 ◽  
Vol 95 (2) ◽  
pp. 145-150 ◽  
Author(s):  
D.R.K. Reddy
Keyword(s):  
Dark Energy ◽  
Deceleration Parameter ◽  
Bianchi Type ◽  
Ricci Dark Energy ◽  
Theor Phys ◽  
Linearly Varying Deceleration Parameter ◽  
Theory Of Gravitation ◽  
Bianchi Type V Universe ◽  
Type V ◽  
Bianchi Type V

We have investigated Bianchi type-V universe filled with matter and modified holographic Ricci dark energy in a scalar–tensor theory proposed by Saez–Ballester (Phys. Lett. A, 113, 467 (1986)). To get a determinate solution, we have used (i) hybrid expansion law (Akarsu et al. JCAP, 01, 022 (2014)), (ii) varying deceleration parameter (Mishra et al. Int. J. Theor. Phys. 52, 2546 (2013)), and (iii) linearly varying deceleration parameter (Akarsu and Dereli. Int. J. Theor. Phys. 51, 612 (2012)). The various physical and geometrical aspects of the models are also discussed.

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