The simplest ΛCDM model provides a good fit to a large span of cosmological data but
harbors large areas of phenomenology and ignorance. With the improvement of the number …

Singularities in any physical theory are either remarkable indicators of the unknown
underlying fundamental theory, or indicate a change in the description of the physical reality …

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 …

We investigate the observational consequences of a novel class of stable interacting dark
energy (IDE) models, featuring interactions between dark matter (DM) and dark energy (DE) …

We investigate interacting scenarios that belong to a wider class, since they include a
dynamical dark energy component whose equation of state follows various one-parameter …

We investigated a possible interaction between cold dark matter and dark energy,
corresponding to a well-known interacting dark energy model discussed in the literature …

We study a coupled quintessence model with pure momentum exchange and present the
effects of such an interaction on the cosmic microwave background (CMB) and matter power …

The mismatch between the locally measured expansion rate of the universe and the one
inferred from observations of the cosmic microwave background (CMB) assuming the …

Coupled dark matter–dark energy scenarios are modeled via a dimensionless parameter ξ,
which controls the strength of their interaction. While this coupling is commonly assumed to …