The QCD axion has been postulated to exist because it solves the strong-CP problem.
Furthermore, if it exists axions should be created in the early Universe and could account for …

We show that, contrary to assertions in the literature, the main contribution to the axion-
photon coupling need not be quantized in the units proportional to $ e^ 2$. In particular, we …

The QCD (Quantum ChromoDynamics) axion emerged as one of the best-motivated dark
matter candidates. In 2018, the Axion Dark Matter eXperiment (ADMX), one of the US …

It is known that haloscopes that search for dark matter axions via the axion-photon anomaly
are also sensitive to gravitational radiation through the inverse Gertsenshtein effect …

The most sensitive haloscopes that search for axion dark matter through the two photon
electromagnetic anomaly convert axions into photons through the mixing of axions with a …

A bstract The QCD axion or axion-like particles are candidates of dark matter of the universe.
On the other hand, axion-like excitations exist in certain condensed matter systems, which …

First experimental results from a room-temperature tabletop phase-sensitive axion
haloscope experiment are presented. The technique exploits the axion-photon coupling …

Recently, interactions between putative axions and magnetic monopoles have been
revisited by two of the authors. 1 It is shown that significant modifications to conventional …

A number of proposed and ongoing experiments search for axion dark matter with a mass
nearing the limit set by small scale structure [O (10-21 eV)]. We consider the late universe …

I highlight a few thoughts on the contribution to the dipole moments from the so-called θ
parameter. The dipole moments are known can be generated by θ. In fact, the renowned …