Speaker
Ricardo Zambujal Ferreira
(IFAE-Barcelona)
Description
Heavy QCD axion models are motivated by the so-called "quality problem", the sensitivity of the QCD axion to misaligned contributions to its potential.
In this talk I will show that despite the absence of axion relics today, these models can generically produce a large amount of gravitational waves, a non-vanishing theta angle and, in some cases, both signals simultaneously.
Therefore, I will argue that GW observatories (e.g. LIGO-VIRGO-KAGRA, LISA) and future neutron and proton EDM experiments are good laboratories to search for the Heavy QCD axion.
Primary author
Ricardo Zambujal Ferreira
(IFAE-Barcelona)
