In the late 1970s, the axion was proposed as a solution to the strong CP problem, ie, the
puzzle why the strong interactions conserve parity P and the product CP of charge …

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 …

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 …

The next generation of axion direct-detection experiments may rule out or confirm axions as
the dominant source of dark matter. We develop a general likelihood-based framework for …

Antiferromagnetically doped topological insulators (ATI) are among the candidates to host
dynamical axion fields and axion polaritons, weakly interacting quasiparticles that are …

The axion emerges in extensions of the Standard Model that explain the absence of CP
violation in the strong interactions. Simultaneously, it can provide naturally the cold dark …

Existing searches for cosmic axions relics have relied heavily on the axion being
nonrelativistic and making up dark matter. However, light axions can be copiously produced …

In this report we present the status of the MAgnetized Disk and Mirror Axion eXperiment
(MADMAX), the first dielectric haloscope for the direct search of dark matter axions in the …

We develop a formalism to describe extensions of existing axion haloscope designs to those
that possess directional sensitivity to incoming dark matter axion velocities. The effects are …

The impact of axion-like particles on the light polarization around the horizon of
supermassive black hole (SMBH) is discussed in the light of the latest polarization …