Anisotropic inflation with non-abelian gauge kinetic function

Keiju Murata, Jiro Soda

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)


We study an anisotropic inflation model with a gauge kinetic function for a non-abelian gauge field. We find that, in contrast to abelian models, the anisotropy can be either a prolate or an oblate type, which could lead to a different prediction from abelian models for the statistical anisotropy in the power spectrum of cosmological fluctuations. During a reheating phase, we find chaotic behaviour of the non-abelian gauge field which is caused by the nonlinear self-coupling of the gauge field. We compute a Lyapunov exponent of the chaos which turns out to be uncorrelated with the anisotropy.

Original languageEnglish
Article number037
JournalJournal of Cosmology and Astroparticle Physics
Issue number6
Publication statusPublished - 2011 Jun
Externally publishedYes


  • inflation
  • physics of the early universe

ASJC Scopus subject areas

  • Astronomy and Astrophysics


Dive into the research topics of 'Anisotropic inflation with non-abelian gauge kinetic function'. Together they form a unique fingerprint.

Cite this