Abstract The standard Λ Cold Dark Matter (ΛCDM) cosmological model provides a good
description of a wide range of astrophysical and cosmological data. However, there are a …

Recent years have witnessed a rise in interest in the geometrical trinity of General Relativity
and its extensions. This interest has been fuelled by novel insights into the nature of gravity …

A number of challenges to the standard Λ CDM model have been emerging during the past
few years as the accuracy of cosmological observations improves. In this review we discuss …

Abstract The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders
about the fundamental theory of nature at play in the extreme gravity regime, where the …

Abstract LiteBIRD, the Lite (Light) satellite for the study of B-mode polarization and Inflation
from cosmic background Radiation Detection, is a space mission for primordial cosmology …

We present the cosmological implications from final measurements of clustering using
galaxies, quasars, and Ly α forests from the completed Sloan Digital Sky Survey (SDSS) …

The cosmological principle (CP)—the notion that the Universe is spatially isotropic and
homogeneous on large scales—underlies a century of progress in cosmology. It is …

We present a new bound on the ultralight axion (ULA) dark matter mass ma, using the
Lyman-alpha forest to look for suppressed cosmic structure growth: a 95% lower limit ma> …

We investigate the impact on cosmological observables of f (Q)-gravity, a specific class of
modified gravity models in which gravity is described by the nonmetricity scalar, Q. In …

We present results from an analysis of all data taken by the bicep2/Keck CMB polarization
experiments up to and including the 2015 observing season. This includes the first Keck …