Cosmology intertwined: A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies
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 …
description of a wide range of astrophysical and cosmological data. However, there are a …
Cosmological backgrounds of gravitational waves
C Caprini, DG Figueroa - Classical and Quantum Gravity, 2018 - iopscience.iop.org
Gravitational waves (GWs) have a great potential to probe cosmology. We review early
universe sources that can lead to cosmological backgrounds of GWs. We begin by …
universe sources that can lead to cosmological backgrounds of GWs. We begin by …
[HTML][HTML] Inflationary interpretation of the stochastic gravitational wave background signal detected by pulsar timing array experiments
S Vagnozzi - Journal of High Energy Astrophysics, 2023 - Elsevier
Various pulsar timing array (PTA) experiments (NANOGrav, EPTA, PPTA, CPTA, including
data from InPTA) very recently reported evidence for excess red common-spectrum signals …
data from InPTA) very recently reported evidence for excess red common-spectrum signals …
Primordial gravitational waves from NANOGrav: A broken power-law approach
We revisit the possibility that the stochastic common-spectrum process recently detected by
the NANOGrav pulsar timing array experiment could be due to primordial gravitational …
the NANOGrav pulsar timing array experiment could be due to primordial gravitational …
European pulsar timing array limits on an isotropic stochastic gravitational-wave background
We present new limits on an isotropic stochastic gravitational-wave background (GWB)
using a six pulsar data set spanning 18 yr of observations from the 2015 European Pulsar …
using a six pulsar data set spanning 18 yr of observations from the 2015 European Pulsar …
Bouncing cosmologies: progress and problems
R Brandenberger, P Peter - Foundations of Physics, 2017 - Springer
We review the status of bouncing cosmologies as alternatives to cosmological inflation for
providing a description of the very early universe, and a source for the cosmological …
providing a description of the very early universe, and a source for the cosmological …
The quest for B modes from inflationary gravitational waves
The search for the curl component (B mode) in the cosmic microwave background (CMB)
polarization induced by inflationary gravitational waves is described. The canonical single …
polarization induced by inflationary gravitational waves is described. The canonical single …
A critical review of classical bouncing cosmologies
D Battefeld, P Peter - Physics Reports, 2015 - Elsevier
Given the proliferation of bouncing models in recent years, we gather and critically assess
these proposals in a comprehensive review. The PLANCK data shows an unmistakably red …
these proposals in a comprehensive review. The PLANCK data shows an unmistakably red …
Gravitational-wave cosmology across 29 decades in frequency
Quantum fluctuations of the gravitational field in the early Universe, amplified by inflation,
produce a primordial gravitational-wave background across a broad frequency band. We …
produce a primordial gravitational-wave background across a broad frequency band. We …
Features and new physical scales in primordial observables: theory and observation
All cosmological observations to date are consistent with adiabatic, Gaussian and nearly
scale invariant initial conditions. These findings provide strong evidence for a particular …
scale invariant initial conditions. These findings provide strong evidence for a particular …