Abstract
In this paper, we examine the spatially homogeneous and anisotropic Kantowski–Sachs (KS) space–time with viscous Ricci dark energy in the framework of Saez and Ballester (Phys Lett A 113:467, 1986) scalar tensor theory of gravitation. To solve the field equations, we use (i) the relationship between metric potentials which is obtained from the condition that shear scalar of the model is proportional to the expansion scalar and (ii) the relationship between average scale factor (a(t)) and bulk viscous coefficient \((\xi )\) as \(\xi =\xi _0+\xi _1\big (\frac{\dot{a}}{a}\big )+\xi _2\big (\frac{\ddot{a}}{\dot{a}}\big )\), where \(\xi _0\), \(\xi _1\) and \(\xi _2\) are constants. Some well-known cosmological implications such as deceleration parameter, equation of state parameter, statefinder and Om diagnostic parameters of the model are constructed and analyzed through graphical representation. It is also observed that the KS viscous Ricci dark energy model presented here is compatible with the current cosmological observations.
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Santhi, M.V., Sobhanbabu, Y. Kantowski–Sachs viscous Ricci dark energy model in Saez–Ballester theory of gravitation. Indian J Phys 96, 1867–1875 (2022). https://doi.org/10.1007/s12648-021-02121-1
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DOI: https://doi.org/10.1007/s12648-021-02121-1