We compile a complete collection of reliable Hubble parameter H (z) data to redshift z≤
2.36 and use them with the Gaussian Process method to determine continuous H (z) …

Some remarkable examples of alternative cosmological theories are reviewed here, ranging
from a compilation of variations on the Standard Model through the more distant quasi …

We use the physically consistent tilted spatially flat and untilted non-flat ΛCDM inflation
models to constrain cosmological parameter values with the Planck 2015 cosmic microwave …

We investigate the impact of the Dark Energy Spectroscopic Instrument (DESI) 2024 data on
dark energy scenarios. We thus analyze three typologies of models, the first in which the …

In this paper, we present some cosmological models with a hybrid scale factor (HSF) in the
framework of general relativity (GR). The HSF fosters an early deceleration as well as a late …

We study a complete cosmological model based on an asymmetric scalar doublet
represented by the classical and phantom scalar Higgs fields. Moreover, we remove the …

Dark energy equation of state can be effectively described by that of a barotropic fluid. The
barotropic fluid model describes the background evolution and the functional form of the …

Some phantom cosmological models without big rip singularity have been constructed in a
simple extended theory of gravity. In the geometrical part of the action, a minimally coupled …

Familiar concepts in physics, such as Lorentz symmetry, are expected to be broken at
energies approaching the Planck energy scale as predicted by several quantum-gravity …

On the basis of the general relativistic statistical and kinetic theory, a consistent closed
cosmological model is formulated. It is based on a statistical system of scalar-charged …