KMI Colloquium
"Cosmological Problems in Axion Models"
Masahiro Kawasaki
(ICRR, The University of Tokyo)
October 7, 2015 (Wed) 17:00-
KMI Science Symposia (ES635)
Abstract:
The axion is a Nambu-Goldstone boson which appears in Peccei-Quinn mechanism for solving the strong CP problem in QCD and it is a promising candidate for dark matter in the Universe. However, the axion has two serious cosmological problems, domain wall and isocurvature perturbation problems. In this talk I will explain these problems and their solutions.