Abstract The Laser Interferometer Space Antenna (LISA) has two scientific objectives of
cosmological focus: to probe the expansion rate of the universe, and to understand …

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 …

Abstract We implement Crossing Statistics to reconstruct in a model-agnostic manner the
expansion history of the universe and properties of dark energy, using DESI Data Release 1 …

There is compelling evidence that the Universe is undergoing a late phase of accelerated
expansion. One of the simplest explanations for this behavior is the presence of dark energy …

We review the paradigm of holographic dark energy (HDE), which arises from a theoretical
attempt of applying the holographic principle (HP) to the dark energy (DE) problem. Making …

This paper presents cosmological results based on full-mission Planck observations of
temperature and polarization anisotropies of the cosmic microwave background (CMB) …

Despite its continued observational successes, there is a persistent (and growing) interest in
extending cosmology beyond the standard model, Λ CDM. This is motivated by a range of …

After a decade and a half of research motivated by the accelerating universe, theory and
experiment have reached a certain level of maturity. The development of theoretical models …

We study the implications of Planck data for models of dark energy (DE) and modified gravity
(MG) beyond the standard cosmological constant scenario. We start with cases where the …

The discovery of the accelerating universe in the late 1990s was a watershed moment in
modern cosmology, as it indicated the presence of a fundamentally new, dominant …