Bianchi Type-I Bulk Viscous String Model in f(R) Gravity. Issue 1 (2nd January 2019)

• Record Type: Journal Article
• Authors: Vijaya Santhi, M.; Rao, V.U.M.; Aditya, Y.
• Is Part Of: Journal of dynamical systems and geometric theories. Volume 17:Issue 1(2019)
• Page Start: 23
• Page End: 38
• Publication Date: 2019-01-02
• Subjects: 83D05 -- 81T30; LRS Bianchi type-I metric -- Bulk viscosity -- f(R) gravity -- Modified gravity -- Cosmic strings; Differentiable dynamical systems -- Periodicals; Geometry -- Periodicals; Differentiable dynamical systems; Geometry; Periodicals; 515.39
• DOI: 10.1080/1726037X.2019.1611729
• Languages: English
• ISSNs: 1726-037X

Abstract

ABSTRACT: Field equations of f(R) theory of gravity are obtained with the aid of locally rotationally symmetric (LRS) Bianchi type- I metric when the matter source is a bulk viscous fluid containing one dimensional cosmic strings. Applying some physically possible conditions, we have obtained a determinate solution of the field equations. The deceleration parameter of our model exhibits a smooth transition from early decelerated phase to late time accelerating phase. We also find that the realistic energy conditions p ≥ 0 and pp ≤ 0 are satisfied in our model. Some other properties of the model are also discussed.