Cavity magnonics deals with the interaction of magnons—elementary excitations in
magnetic materials—and confined electromagnetic fields. We introduce the basic physics …

Identifying the nature of dark matter (DM) has long been a pressing question for particle
physics. In the face of ever-more-powerful exclusions and null results from large-exposure …

We study the contribution to the QCD axion dark matter abundance that is produced by
string defects during the so-called scaling regime. Clear evidence of scaling violations is …

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 …

A bstract We assess the status of past and future experiments on lepton flavor violating (LFV)
muon and tau decays into a light, invisible, axion-like particle (ALP), a. We propose a new …

We summarize the recent progress of the Axion Longitudinal Plasma Haloscope (ALPHA)
Consortium, a new experimental collaboration to build a plasma haloscope to search for …

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 …

The axion is a highly motivated elementary particle that could address two fundamental
questions in physics—the strong charge-parity (CP) problem and the dark matter mystery …

In the scenario in which QCD axion dark matter is produced after inflation, the Universe is
populated by large inhomogeneities on very small scales. Eventually, these fluctuations will …

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 …