2016/06/01 by G. S. Khadekar, Khadekar, G. S., Arti Ghogre +3
Earth and Planetary Sciences · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Cosmology and Gravitation Theories #FOS: Physical sciences #General Physics (physics.gen-ph) #Geophysics and Gravity Measurements #physics.gen-ph
paper · pdf · doi:10.48550/arxiv.1606.07681
7 pages, 2 figures
arxiv created 2016/06/01 · openalex publication_date 2016/06/01 · arxiv updated 2016/06/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this work we consider the Kantowski-Sachs (KS) universe in the framework of varying speed of light theory. We present the general solutions of the gravitational field equations with variable speed of light c(t), gravitational coupling parameter G(t) and the decaying vacuum energy Λ(t) for the KS model. In the limiting case for the equation of state (EOS) parameter γ=2 (stiff fluid with p=ρc2) and γ=1 (dust with p=0), exact solutions of the field equations are obtained. The numerical solutions are also presented for both the cases. Moreover, it is shown that in the limiting case of large time, the mean anisotropy parameter tends to zero for γ=2 and γ=1. Thus the time variation of the fundamental constants provides an effective mechanism for the isotropization of the KS universe.