Bianchi Type II, VIII & IX Cosmological Model with Magnetized Anisotropic Dark Energy in Brans-Dicke Theory of Gravitation

In the present paper, we have investigated Bianchi type II, VIII and IX spacetime in the presence of magnetized anisotropic dark energy in the Scale covariant theory of gravitation. Exact solution of the field equations are obtained by assuming the expansion anisotropy (the ratio of shear scalar to expansion scalar) to be a function of average scale factor. The isotropy of the fluid, space and expansion are examined.

Download Full-text

The Measurement of and in Bianchi Type-I Anisotropic Dark Energy Cosmological Model with Constant Deceleration Parameter in Bimetric Theory of Gravitation

IOSR Journal of Mathematics ◽

10.9790/5728-10322838 ◽

2014 ◽

Vol 10 (3) ◽

pp. 28-38 ◽

Cited By ~ 1

Author(s):

M. S. Borkar ◽

◽

P. V. Gayakwad

Keyword(s):

Dark Energy ◽

Cosmological Model ◽

Deceleration Parameter ◽

Bianchi Type ◽

Bimetric Theory ◽

Type I ◽

Constant Deceleration Parameter ◽

Bianchi Type I ◽

Anisotropic Dark Energy ◽

Theory Of Gravitation

Download Full-text

Dynamics of Bianchi type-V anisotropic dark energy cosmological model in a scale covariant theory of gravitation

International Journal of Mathematics and Systems Science ◽

10.24294/ijmss.v1i4.560 ◽

2018 ◽

Vol 1 (3) ◽

Author(s):

Dandala Radhakrishna Reddy 1

Keyword(s):

Dark Energy ◽

Cosmological Model ◽

Bianchi Type ◽

Covariant Theory ◽

Scale Covariant Theory ◽

Anisotropic Dark Energy ◽

Theory Of Gravitation ◽

Type V ◽

The Universe ◽

Bianchi Type V

This paper is devoted to the discussion of dynamical properties of anisotropic dark energy cosmological model of the universe in a Bianchi type-V space time in the framework of scale covariant theory of gravitation formulated by Canuto et al.(phys.Rev.Lett.39:429,1977).A dark energy cosmological model is presented by solving the field equations of this theory by using some physically viable conditions. The dynamics of the model is studied by computing the cosmological parameters, dark energy density, equation of state(EoS) parameter, skewness parameters, deceleration parameter and the jerk parameter. This being a scalar field model gives us the quintessence model of the universe which describes a significant dark energy candidate of our accelerating universe. All the physical quantities discussed are in agreement with the recent cosmological observations.

Download Full-text

Bianchi Type- II Universe with Anisotropic Dark Energy in Lyra Geometry

Advances in Astrophysics ◽

10.22606/adap.2017.24002 ◽

2017 ◽

Vol 2 (4) ◽

pp. 231-237

Author(s):

R. K. Dubey ◽

◽

Shri Ram ◽

Neelam Yadav ◽

Vipendra Dwivedi ◽

...

Keyword(s):

Dark Energy ◽

Bianchi Type ◽

Lyra Geometry ◽

Type Ii ◽

Anisotropic Dark Energy

Download Full-text

Anisotropic Bianchi type-II modified holographic Ricci dark energy model in scale-covariant theory of gravitation

Canadian Journal of Physics ◽

10.1139/cjp-2020-0443 ◽

2021 ◽

Author(s):

Shri Ram ◽

S. Chandel ◽

M.K. Verma

Keyword(s):

Dark Energy ◽

Bianchi Type ◽

Covariant Theory ◽

Type Ii ◽

Field Equations ◽

Ricci Dark Energy ◽

Scale Covariant Theory ◽

Cosmological Observations ◽

Negative Constant ◽

Theory Of Gravitation

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 σ11 of the shear tensor σji 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.

Download Full-text