We explore whether nonstandard dark sector physics might be required to solve the existing
cosmological tensions. The properties we consider in combination are (a) an interaction …

We examine interactions between dark matter and dark energy in light of the latest
cosmological observations, focusing on a specific model with coupling proportional to the …

Abstract The\(\Lambda\)-term in Einstein's equations is a fundamental building block of the
'concordance'\(\Lambda\) CDM model of cosmology. Even though the model is not free of …

We present a full-fledged analysis of Brans–Dicke cosmology with a cosmological constant
and cold dark matter (BD-ΛCDM for short). We extend the scenarios where the current …

Cosmological models describing the nongravitational interaction between dark matter and
dark energy are based on some phenomenological choices of the interaction rates between …

We investigate a well known scenario of interaction in the dark sector where the vacuum
energy is interacting with cold dark matter throughout the cosmic evolution in light of the …

We realize the Agrawal-Obied-Vafa (AOV) swampland proposal of fading dark matter by the
model of Salam-Sezgin and its string realization of Cvetič-Gibbons-Pope. The model …

We provide a general framework for studying the dark energy cosmology in which a scalar
field ϕ is nonminimally and kinetically coupled to cold dark matter (CDM). The scalar …

We study the dynamical properties of a large body of varying vacuum cosmologies for which
dark matter interacts with vacuum. In particular, performing the critical point analysis we …

We investigate the recently introduced metastable dark energy (DE) models after the final P
lanck 2018 legacy release. The essence of the present work is to analyze their evolution at …