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Journals / Turkish Journal of Physics / 2009 / Cilt: 33 - Sayı: 3

Kantowski-Sachs viscous fluid cosmological model with a varying $Lambda$

S. P. KANDALKAR
P.P. KHADE
S. P. GWANDE
Pages
155–165
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Some physical and geometrical properties of the models are also discussed.

📌 3 Key Takeaways

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Objective & Hypothesis:We study the Kantowski-Sachs cosmological model filled with viscous fluid in the presence of cosmological term Λ.
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Key Findings & Data:To get a deterministic solution, a condition between metric potentials is used.
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Conclusion & Impact:Some physical and geometrical properties of the models are also discussed.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

We study the Kantowski-Sachs cosmological model filled with viscous fluid in the presence of cosmological term Λ. To get a deterministic solution, a condition between metric potentials is used. The viscous coefficient of bulk viscous fluid is assumed to be a power function of mass density, whereas coefficient of shear viscosity is considered proportional to scale of expansion in the model. It is found that the cosmological constant Λ is positive and is a decreasing function of time, which is supported by results from recent supernova observations. Some physical and geometrical properties of the models are also discussed.

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Cite This Article

KANDALKAR, S. P., KHADE, P., GWANDE, S. P. (2022). Kantowski-Sachs viscous fluid cosmological model with a varying $Lambda$. Turkish Journal of Physics, Cilt: 33 - Sayı: 3, 155–165. https://ajindex.com/articles/614045

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