Cosmology of Axion Rotation
Keisuke Harigaya (University of Chicago)
Abstract: We will introduce new cosmological dynamics of the QCD axion, where the axion field rotates in field space. Axion dark matter may be produced from the kinetic energy of the rotation and the required axion decay constant is much below the prediction of the conventional evolutions. The angular momentum of the rotation is transferred into baryon asymmetry through baryon number violating interactions. We discuss the electroweak sphaleron process and some beyond-standard model processes and predictions on the parameters of each theory.
HEP - phenomenologyHEP - theorymathematical physics
Audience: researchers in the topic
Series comments: Description: Weekly research seminar of the NHETC at Rutgers University
Livestream link is available on the webpage.
| Organizers: | Christina Pettola*, Sung Hak Lim, Vivek Saxena*, Erica DiPaola* |
| *contact for this listing |