Numerical study of Q-ball formation in gravity mediation

Takashi Hiramatsu, Masahiro Kawasaki, Fuminobu Takahashi

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)


We study Q-ball formation in the expanding universe on 1D, 2D and 3D lattice simulations. We obtain detailed Q-ball charge distributions, and find that the distribution is peaked at Q3Dpeak ≈ 1.9 × 10-2(|Φin|/m)2, which is greater than the existing result by about 60%. Based on the numerical simulations, we discuss how the Q-ball formation proceeds. Also we make a comment on possible deviation of the charge distributions from what was conjectured in the past.

Original languageEnglish
Article number008
JournalJournal of Cosmology and Astroparticle Physics
Issue number6
Publication statusPublished - 2010
Externally publishedYes


  • cosmology of theories beyond the SM
  • physics of the early universe
  • supersymmetry and cosmology

ASJC Scopus subject areas

  • Astronomy and Astrophysics


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