- Feb. 20, 2023, 2:00 pm US/Central
- Keisuke Harigaya, University of Chicago
- Huangyu Xiao, 2064808472, huangyu@fnal.gov
The QCD axion explains why QCD almost preserves the charge-conjugation parity symmetry. The QCD axion is also a dark matter candidate and is under intensive experimental searches for a wide range of its decay constant. In this talk, I will review the production mechanisms of axion dark matter in the early universe, focusing on those predicting a smaller decay constant than what conventional mechanisms predict. One of the mechanisms, kinetic misalignment, can also produce the baryon asymmetry of the universe.