We review the physics and phenomenology of wave dark matter: a bosonic dark matter
candidate lighter than about 30 eV. Such particles have a de Broglie wavelength exceeding …

We review the landscape of QCD axion models. Theoretical constructions that extend the
window for the axion mass and couplings beyond conventional regions are highlighted and …

Very compact objects probe extreme gravitational fields and may be the key to understand
outstanding puzzles in fundamental physics. These include the nature of dark matter, the …

Axions and other very light axion-like particles appear in many extensions of the Standard
Model, and are leading candidates to compose part or all of the missing matter of the …

Many aspects of the large-scale structure of the Universe can be described successfully
using cosmological models in which 27±1% of the critical mass-energy density consists of …

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

We study Bose-Einstein condensation and the formation of Bose stars in virialized dark
matter halos and miniclusters by universal gravitational interactions. We prove that this …

Compact objects occupy a pivotal role in the exploration of Nature. The interest spans from
the role of compact objects in astrophysics to their detection through various methods …

We consider primordial black hole (PBH) production in inflationary α-attractors. We discuss
two classes of models, namely models with a minimal polynomial superpotential as well as …

GRChombo is an open-source code for performing Numerical Relativity time evolutions,
built on top of the publicly available Chombo software for the solution of PDEs. Whilst …