Possible effects of large-scale magnetic fields on the cosmic microwave background (CMB)
are reviewed. Depending on the specific branch of the spectrum of plasma excitations …

In this work, a bumblebee field is adopted in order to generate cosmological anisotropies.
For that purpose, we assume a Bianchi I cosmology, as the background geometry, and a …

A self-consistent system of interacting nonlinear spinor and scalar fields within the scope of
a Bianchi type-I cosmological model filled with perfect fluid is considered. Exact self …

We overview the systematic approach to the unified description of dark energy (DE) and a
certain class of dark matter (DM) candidates represented by stress–energy tensors with the …

Although the new era of high-precision cosmology of the cosmic microwave background
(CMB) radiation improves our knowledge to understand the infant as well as the present-day …

We consider the nonlinearly extended Einstein–Maxwell-axion theory, which is based on the
account for two symmetries: first, the discrete symmetry associated with the properties of the …

The dynamics of the Universe is studied in the framework of a spatially homogeneous
Bianchi-V space-time filled with a perfect fluid composed of non-interacting matter and …

We present a family of spherically symmetric multihorizon spacetimes with a vacuum dark
fluid, associated with a time-dependent and spatially inhomogeneous cosmological term …

We consider a Bianchi I geometry of the universe. We obtain a cosmic shear expression
related to the eccentricity of the universe. In particular, we study the connections among …

The spatially homogeneous and anisotropic Bianchi type V cosmological solutions of
massive string have been investigated in the presence of a magnetic field within the …