| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9861102 | Physics Letters B | 2005 | 7 Pages |
Abstract
Q-ball is a nontopological soliton whose stability is ensured by global U(1) symmetry. We study a Q-ball which arises in the Affleck-Dine mechanism for baryogenesis and consider its possible instability due to U(1) breaking term (A-term) indispensable for successful baryogenesis. It is found that the instability destroys the Q-ball if its growth rate exceeds inverse of the typical relaxation time scale of the Q-ball. However, the instability is not so strong as it obstructs the cosmological formation of the Q-balls.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Masahiro Kawasaki, Kenichiro Konya, Fuminobu Takahashi,