Q-ball instability due to U(1) breaking

Masahiro Kawasaki, Kenichiro Konya, Fuminobu Takahashi

研究成果: Article査読

18 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)233-239
ページ数7
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
619
3-4
DOI
出版ステータスPublished - 2005 7 21
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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