JiJi Fan

Kaleidoscope of axion models and probes

Abstract:

Axions, periodic pseudo-scalars, enjoy a wide range of phenomenological applications, from solving the strong CP problem to providing DM and inflaton candidates. Justifiably, they have been the subject of prolonged theoretical interest, which has intensified over the past few years. In this talk, I will discuss several small but fun developments in axion models and probes, including a recently identified source of axion potential, new axion cosmological models, and novel astrophysical probes.