The axion is a light pseudoscalar particle postulated to solve issues with the Standard
Model, including the strong CP problem and the origin of dark matter. In recent years, there …

The dark photon is a massive hypothetical particle that interacts with the Standard Model by
kinetically mixing with the visible photon. For small values of the mixing parameter, dark …

We perform an extensive analysis of the statistics of axion masses and interactions in
compactifications of type IIB string theory, and we show that black hole superradiance …

It has been suggested that certain antiferromagnetic topological insulators contain axion
quasiparticles (AQs), and that such materials could be used to detect axion dark matter …

We show that dark matter can be accounted for by an axion that solves the strong CP
problem, but is much lighter than usual due to a Z Script N symmetry. The whole mass range …

While astrophysical and cosmological probes provide a remarkably precise and consistent
picture of the quantity and general properties of dark matter, its fundamental nature remains …

Besides CP-preserving interactions, axions and axion-like particles may also have small CP-
violating scalar Yukawa interactions with nucleons and electrons. Any such interaction will …

Axionlike particles (ALPs) are a compelling candidate for dark matter (DM), whose
production is associated with the formation of a string-wall network. If walls bounded by …

The mass and the spin of accreting and jetted black holes, at the center of Active Galactic
Nuclei (AGNs), can be probed by analyzing their electromagnetic spectra. For this purpose …

The deformability of a compact object under the presence of a tidal perturbation is encoded
in the tidal Love numbers (TLNs), which vanish for isolated black holes in vacuum. We show …