Dynamics of axial symmetric system in self-interacting brans–dicke gravity.
Loading...
Date
2016
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
European Physics Journal , Springer link
Abstract
This paper investigates dynamics of axial reflection symmetric model in self-interacting Brans-Dicke gravity for anisotropic fluid. We formulate hydrodynamical equations and discuss oscillations using time-dependent perturbation for both spin as well as spin-independent cases. The expressions of frequency, total energy density and equation of motion of oscillating model are obtained. We study instability of oscillating models in weak approximations. It is found that the oscillations and stability of the model depend upon the dark energy source along with anisotropy and reflection effects. We conclude that the axial reflection system remains stable for stiffness parameter Γ = 1, collapses for Γ > 1 and becomes unstable for 0 < Γ < 1.
Description
Keywords
Mathematics, Brans-Dicke theory; Axial symmetry; Instability; Newtonian and post-Newtonian regimes
Citation
Sharif, M., & Manzoor, R. (2016). Dynamics of axial symmetric system in self-interacting Brans–Dicke gravity. European Physics Journal C, 76(330), 1-12. (Rubab Manzoor (Mathematics /SSC), JCR LISTED (IF:4:912))