An investigation on gravitational entropy of cosmological models

In this paper, we investigate the entropy of free gravitational field for a given epoch some well-known isotropic and anisotropic cosmologies. We use definition proposed by Clifton, Ellis Tavakol, where 2-index square root 4-index Bel–Robinson tensor is taken to be energy– momentum gravity. examine whether in vicinity initial singularity, ratio energy density gravity that matter goes zero, validating Penrose conjecture on Weyl curvature. Whenever true, increases monotonically with time, leading structure formation. For models considered us, identify conditions which curvature hypothesis valid, assumptions under it validated, or otherwise.