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 …

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 …

We review the effective field theory (EFT) approach to gravitational dynamics. We focus on
extended objects in long-wavelength backgrounds and gravitational wave emission from …

The observational fact that the present values of the densities of dark energy and dark matter
are of the same order of magnitude, ρ _ de 0/ρ _ dm 0 ∼ O (1) ρ de 0/ρ dm 0∼ O (1), seems …

Unresolved sources of gravitational waves are at the origin of a stochastic gravitational wave
background. While the computation of its mean density as a function of frequency in a …

We propose an effective model to describe the bias induced on cosmological observables
by Laniakea, the gravitational supercluster hosting the Milky Way, which was defined using …

No. In a number of papers, Green and Wald argue that the standard FLRW model
approximates our Universe extremely well on all scales, except close to strong-field …

In this paper, we summarize some of the main observational challenges for the standard
Friedmann–Lemaître–Robertson–Walker (FLRW) cosmological model and describe how …

We study the effective cosmological dynamics, emerging as the hydrodynamics of simple
condensate states, of a group field theory (GFT) model for quantum gravity coupled to a …

In the late 1990's, observations of two directionally-skewed samples of, in total, 93 Type Ia
supernovae were analysed in the framework of the Friedmann–Lemaître–Robertson–Walker …