Kaluza–Klein Universe interacting with wet dark fluid in f(R,T) gravity

Abstract

In this paper, we study the essence of [Formula: see text] gravitation theory in five-dimensional Universe and see the role of dark energy in the form of wet dark fluid in a Kaluza–Klein Universe. It is found that the dark energy is not exaggerated in contributing to the accelerating expansion of the Universe though the expansion is inherent as a result of the theory itself and due to the geometric contribution of matter. It is interesting to see that in some model it is found that there was some era before the beginning of the present era. Some of the models are seen to go to [Formula: see text]CDM models in late future as in Einstein gravitation theory, starting the evolution with a big bang. Most of the models undergo early inflation as well as late-time accelerating expansion thus defining as good models for real astrophysical situations, with dark energy playing fundamental role in these Universe. Most interesting observation from this investigation is that we can developed new isotropic and anisotropic models of Kaluza–Klein Universe.