A scalar–tensor theory of gravity was considered, wherein the gravitational coupling G and
the speed of light c were admitted as space–time functions and combined to form the …

An alternative scenario about the phenomenology of primordial universe is k-inflation.
According to this concept, inflation can be achieved by nonstandard kinetic term of scalar …

The strange behaviour of the universe's dark sector offers us the flexibility to address
cosmological problems with different approaches. Using this flexibility, we consider a …

In the present study, we investigate the interaction between dark energy and dark matter,
particularly emphasizing the effects of curvature in the realm of Friedmann–Lemaître …

-gravity in the context of dark energy with power law expansion and energy conditions -
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Abstract Constraints on the Covariant Canonical Gauge Gravity (CCGG) theory from low-
redshift cosmology are studied. The formulation extends Einstein's theory of General …

The early cosmology, driven by a single scalar field, both massless and massive, in the
context of Eddington-inspired Born-Infeld gravity, is explored. We show the existence of …

We study the hypothesis of deformation of the invariance of Lorentz transformations
produced by the introduction of a universal minimum velocity relative to a preferred frame …

The paper extends basic Einstein–Hilbert action by incorporating an invariant derived from a
specific contraction between the Einstein tensor and energy momentum tensor. This …

We study a cosmological model in Rastall's theory of gravity in the framework of the flat
FLRW metric. We formulate the value of the Hubble parameter, which contains two model …