Q-ball metamorphosis

Masahiro Kawasaki, Fuminobu Takahashi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Flat directions in the minimal supersymmetric standard model are known to deform into nontopological solitons, Q balls, which generally possess both baryon and lepton asymmetries. We investigate how Q balls evolve if some of the constituent fields of the flat direction decay into light species. It is found that the Q balls takes a new configuration whose energy per charge slightly increases due to the decay. Specifically, we show that all the stable Q balls eventually transform into pure B balls via the decay into neutrinos.

Original languageEnglish
Article number043517
JournalPhysical Review D
Issue number4 A
Publication statusPublished - 2004 Aug
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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