Speaker
Dr
Masahiro Kawasaki
(University of Tokyo)
Description
We perform three-dimensional lattice simulations to investigate the formation of gauge-mediation type Q-balls. For the first time, we obtain their broad charge distribution of the Q ball of this type. We then discuss the cosmological and astrophysical implications of this broad distribution. In particular, we study the formation of primordial black holes (PBHs) induced by Q-balls. We find that the resulting density perturbations can be sufficiently large to produce an abundant population of PBHs with masses in the range $10^{-15}M_\odot−5\times 10^{-12}M_\odot$, which can account for all of the dark matter in the universe.
Author
Dr
Masahiro Kawasaki
(University of Tokyo)