Anisotropy in Inflation with Non-minimal Coupling

Abstract

We study a new anisotropic inflation model, with an inflaton field nonminimally coupled with the gravity and a vector field. We find that the anisotropic attractor solution exists not only in the weak curvature coupling limit, but more interestingly in the strong curvature coupling limit as well. We show that in the strong curvature coupling limit, the contribution from the anisotropy is greatly suppressed.

arXiv commentV2, 12 pages, 3 figures, numerical analysis added

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• Testing non-minimally coupled inflation with CMB data: a Bayesian analysis
• Cosmic No-hair Conjecture and Inflation with an SU(3) Gauge Field
• Anisotropic inflation in non-minimal kinetic coupling model
• Derivative coupling of inflaton to $R^{(3)}$
• Anisotropic Inflation with General Potentials