Axiogenesis
  We propose a mechanism called axiogenesis where the cosmological excess of
baryons over antibaryons is generated from the rotation of the QCD axion. The
Peccei-Quinn (PQ) symmetry may be explicitly broken in the early universe,
inducing the rotation of a PQ charged scalar field. The rotation corresponds to
the asymmetry of the PQ charge, which is converted into the baryon asymmetry
via QCD and electroweak sphaleron transitions. In the concrete model we
explore, interesting phenomenology arises due to the prediction of a small
decay constant and the connections with new physics at the LHC and future
colliders and with axion dark matter.
