The exploration of the universe has recently entered a new era thanks to the multi-
messenger paradigm, characterized by a continuous increase in the quantity and quality of …

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 …

We review numerous arguments for primordial black holes (PBHs) based on observational
evidence from a variety of lensing, dynamical, accretion and gravitational-wave effects. This …

The first direct measurement of gravitational waves by the LIGO and Virgo collaborations
has opened up new avenues to explore our Universe. This white paper outlines the …

70 AIM, UMR 7158, CEA/DRF, CNRS, Université Paris Diderot, Irfu/Service d'Astrophysique,
Centre de Saclay, FR-91191 Gif-sur-Yvette, France

Detection of a gravitational-wave signal of non-astrophysical origin would be a landmark
discovery, potentially providing a significant clue to some of our most basic, big-picture …

The probability of primordial black hole (PBH) formation is known to be boosted during the
Quantum Chromodynamics (QCD) crossover due to a slight reduction of the equation of …

Seven observations point towards the existence of primordial black holes (PBH), constituting
the whole or an important fraction of the dark matter in the Universe: the mass and spin of …

A universal mechanism may be responsible for several unresolved cosmic conundra. The
sudden drop in the pressure of relativistic matter at W±∕ Z 0 decoupling, the quark–hadron …

Making use of definitive new lattice computations of the Standard Model thermodynamics
during the quantum chromodynamic (QCD) phase transition, we calculate the enhancement …