Anisotropic Cosmological Model Bianchi Type-VI with Viscous Fluid Containing a Varying ?

This paper explores the anisotropic nature of the Cosmological Model Bianchi Type -VI with Viscous Fluid in the presence of cosmological constant ࢫ. Cosmological Model Bianchi Type -VI helps in understanding anisotropic behaviour in the early universe and its implications. To find an exact solution for this model, a supplementary condition between the metric potential is used. Also, it is used the coefficient of shear viscosity is proportional to the scale of expansion, i.e., ࣁ ∝ ࣂ. In this study, I assumed that the viscosity coefficient of a bulk viscosity fluid is a simple power function of energy density, ࣈ)࢚ = (ࣈ૙࣋ ࢘ and it is solved for ࢘ ૙ = and ࢘૚ = . The behaviour of cosmological parameters like pressure, energy density will be analysed, and it is also found that the cosm

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Publication Details

Journal
International Journal for Research in Applied Science and Engineering Technology
Published
2025-09-15
DOI
https://doi.org/10.22214/ijraset.2025.74231
Primary Topic
Cosmology and Gravitation Theories
Type
article
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article

Anisotropic Cosmological Model Bianchi Type-VI with Viscous Fluid Containing a Varying ?

R. A. Wasnik
International Journal for Research in Applied Science and Engineering Technology
Cosmology and Gravitation Theories
article

Anisotropic Cosmological Model Bianchi Type-VI with Viscous Fluid Containing a Varying ?

R. A. Wasnik
article en

Abstract

This paper explores the anisotropic nature of the Cosmological Model Bianchi Type -VI with Viscous Fluid in the presence of cosmological constant ࢫ. Cosmological Model Bianchi Type -VI helps in understanding anisotropic behaviour in the early universe and its implications. To find an exact solution for this model, a supplementary condition between the metric potential is used. Also, it is used the coefficient of shear viscosity is proportional to the scale of expansion, i.e., ࣁ ∝ ࣂ. In this study, I assumed that the viscosity coefficient of a bulk viscosity fluid is a simple power function of energy density, ࣈ)࢚ = (ࣈ૙࣋ ࢘ and it is solved for ࢘ ૙ = and ࢘૚ = . The behaviour of cosmological parameters like pressure, energy density will be analysed, and it is also found that the cosm

International Journal for Research in Applied Science and Engineering TechnologyVol. 13(9)
Sanskriti Samvardhan Mandal (IN)
Openalex Percentile: Top 83%
Cosmology and Gravitation Theories
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