Speaker
Raymond Volkas
(The University of Melbourne)
Description
I will describe the VISHnu model, which is a DFSZ axion-majoron model variant with the following features: (a) No cosmological domain wall problem, thus permitting a post-inflationary axion. (b) Identification of the Peccei-Quinn breaking scale with the type-I seesaw scale, thus explaining the tiny neutrino masses. (c) Baryogenesis via leptogenesis. (d) Successful inflation driven by a non-minimal coupling of the Peccei-Quinn scalar to the Ricci scalar. And, of course, (e) a solution to the strong CP problem.
