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arXiv · 1103.6164

Anisotropic Inflation with Non-Abelian Gauge Kinetic Function

Keiju Murata·Jiro Soda
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Abstract

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.

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Keiju Murata, Jiro Soda. 2011-04-26. Anisotropic Inflation with Non-Abelian Gauge Kinetic Function. https://doi.org/10.1088/1475-7516%2F2011%2F06%2F037

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