Despite the many efforts, our theoretical understanding of the ultimate nature of the dark
energy component of the universe still lags well behind the astounding experimental …

This paper presents anisotropic, homogeneous two-fluid cosmological models in a Bianchi
type I space–time with a variable gravitational constant G and cosmological constant Λ. In …

The exact solutions of the field equations are obtained by using the gamma law equation of
state p=(γ− 1) ρ in which the parameter γ depends on scale factor R. The fundamental form …

Abstract Kaluza–Klein (K–K) dark energy (DE) cosmological models in presence of
magnetized anisotropic fluid have been examined in normal gauge for the field equations for …

We solve Einstein's field equations in higher-dimensional spherically symmetric spacetime
with strange quark matter attached to the string cloud, assuming one parameter group of …

A five dimensional Kaluza-Klein space-time is considered in the presence of a perfect fluid
source with variable G and Λ. An expanding universe is found by using a relation between …

In this paper we consider FRW bulk viscous cosmology in arbitrary space curvature. We
extend recent work to the case of non-flat universe in arbitrary space dimension. We obtain …

We assume the four dimensional induced matter of the 5D Ricci flat bouncing cosmological
solution contains a perfect fluid. The big bounce singularity of simple 5D cosmological …

We have presented cosmological models in five‐dimensional Kaluza‐Klein space‐time with
a variable gravitational constant (G) and cosmological constant (Λ). We have investigated …

This paper presents cosmological models in which the gravitational and cosmological
constants G and\Lambda are time-dependent. We find a variety of solutions for the variation …