Hypersurface-homogeneous modified holographic Ricci dark energy cosmological model by hybrid expansion law in Saez–Ballester theory of gravitation

Author(s):  
A. Y. Shaikh ◽  
A. S. Shaikh ◽  
K. S. Wankhade
Author(s):  
Shri Ram ◽  
S. Chandel ◽  
M.K. Verma

In this paper, we obtain an anisotropic Bianchi type-II space-time with dark matter and the modified holographic Ricci dark energy in the scale-covariant theory of gravitation. Exact solutions of the field equations are obtained by assuming (I) a negative constant value of the deceleration parameter (II) the component σ<sup>1</sup><sub>1</sub> of the shear tensor σ<sup>j</sup><sub>i</sub> is proportional to the mean Hubble parameter and (III) the gauge function Φ is proportional to a power function of the average scale factor. We have also discussed some important physical aspects of the model which is in agreement with the modern cosmological observations.


2014 ◽  
Vol 74 (11) ◽  
Author(s):  
Yeremy Aguilera ◽  
Arturo Avelino ◽  
Norman Cruz ◽  
Samuel Lepe ◽  
Francisco Peña

2018 ◽  
Vol 96 (5) ◽  
pp. 555-559 ◽  
Author(s):  
M.P.V.V. Bhaskar Rao ◽  
D.R.K. Reddy ◽  
K. Sobhan Babu

We have considered Kantowski–Sachs space–time in the presence of matter and anisotropic modified holographic Ricci dark energy components in the scalar–tensor theory of gravitation formulated by Saez and Ballester (Phys. Lett. A, 113, 467, 1986) and derived the field equations of the theory. We have used (i) hybrid expansion law proposed by Akarsu et al. (JCAP, 022, 2014), (ii) a relation between metric potentials, and (iii) modified holographic Ricci dark energy density given by Chen and Jing (Phys. Lett. B, 679, 144, 2009) to obtain an exact solution of the field equations that describes a Kantowski–Sachs holographic modified Ricci dark energy universe in this theory. Physical and kinematical parameters are also computed and their physical behavior is discussed.


Astrophysics ◽  
2014 ◽  
Vol 57 (3) ◽  
pp. 384-400 ◽  
Author(s):  
S. D. Katore ◽  
M. M. Sancheti ◽  
N. K. Sarkate

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