Axially symmetric holographic dark energy model with generalized Chaplygin gas in Brans–Dicke theory of gravitation

Abstract

In this paper, spatially homogeneous anisotropic axially symmetric holographic dark energy cosmological model with generalized Chaplygin gas is obtained in a scalar–tensor theory of gravitation proposed by Brans and Dicke (Phys. Rev. 124, 925 (1961)). To obtain a determinate solution of the field equations we have used a power law between the metric potentials. It has been found that the anisotropic distribution of dark energy leads to the present accelerated expansion of the Universe. All the models obtained and presented here are expanding, non-rotating, and accelerating. Also some important features of the models including look-back time, distance modulus, and luminosity distance versus redshift, and their significances are discussed.