We investigate the role of bulk and shear viscosity in the spatially homogeneous anisotropic
spacetime, in particular, the Kantowski–Sachs (KS) spacetime. General conditions for the …

Bulk viscosity in cold dark matter is an appealing feature that introduces distinctive
phenomenological effects in the cosmological setting as compared to the Λ CDM model …

In this paper we present a phantom solution with a big rip singularity in a non-linear regime
of the Israel–Stewart formalism. In this framework it is possible to extend this causal …

Viscous unified dark matter models aim to describe the dark sector of the Universe, as the
dark matter fluid itself gives rise to an accelerated expansion due to a negative bulk viscous …

In this paper we study the consistency of a cosmological model representing a universe
filled with a one-component dissipative dark matter fluid, in the framework of the causal …

A detailed dynamical analysis for a bulk viscosity model in the full Israel-Stewart formalism
for a spatially flat Friedmann-Robertson-Walker universe is performed. In our study we have …

The inclusion of dissipative effects in cosmic fluids modifies their clustering properties and
could have observable effects on the formation of large-scale structures. We analyze the …

A flat emergent universe (EU) with a non-linear equation of state (p= A ρ+ f (ρ) p= A ρ+ f (ρ))
is studied considering bulk viscosity. In the paper we obtain cosmological models with …

We study the dynamics of a bulk viscosity model in the Eckart approach for a spatially flat
Friedmann–Robertson–Walker (FRW) Universe. We have included radiation and dark …

This article presents nonlinear viscous cosmological model of the universe that arises in the
modified gravity theory in which the Lagrangian of the gravitational action contains a general …