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Journal of Dynamical Systems and Geometric Theories

(Since 2002)
Open Access ·Peer-reviewed·ISSN (Online): 2169-0057·ISSN (Print): 1726-037X

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Half-Yearly Journal: Publishes research on dynamical systems and geometry, including Random Dynamical Systems, hyperbolic behaviour, complex geometry and Ergodic theory.

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Journal of Dynamical Systems and Geometric Theories
Open Access Article

Bianchi Type-I Bulk Viscous String Model in f(R) Gravity

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pp. 23–38Vol. 17Issue 1January 2019DOI: 10.1080/1726037X.2019.1611729XML
Received:
11 Feb 2018
Accepted:
24 Mar 2018
Published Online:
16 May 2019
Article type:
Article
Language:
EN
Article no.:
1726037X.2019.1611729
Pages:
23–38

Abstract

Field equations of undefined 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.

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