Bulk viscous string cosmological models in Saez-Ballester theory of gravity
In this communication, a new class of bulk viscous string cosmological models has been constructed in Saez-Ballester theory of gravitation. To obtain the deterministic solution of the field equations, we have considered deceleration parameter as a bilinear function of cosmic time \(t\) for model I and special parametrization of Hubble parameter for model II. The presented class of the cosmological models indicate phase conversion from early decelerated expansion phase to present accelerated expansion phase. To discuss the dynamicity of the universe, the behaviour of various physical parameters has also been studied and presented graphically. For stability analysis, the nature of various energy conditions is investigated. Statefinder pair analysis is used to discriminate the constructed models with other dark energy models and it is noticed that the proposed models are in good agreement with recent observational data.
KeywordsSaez-Ballester theory Deceleration parameter Cosmological models Dark energy
Conflict of interest
There is no conflict of interest among authors of this communication and will abide by ethical standards of this manuscript.
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