SU($N$)-natural inflation

Abstract

We study SU($N$) gauge fields that couple to the inflaton through the Chern-Simons term. We provide a general procedure to construct homogeneous, isotropic, and attractor solutions of the gauge fields during inflation. The gauge fields develop various VEVs corresponding to different spontaneous symmetry breaking patterns of SU($N$) where embedded SU($2$) subgroups are broken with the spatial rotation SO($3$) symmetry. As specific examples, we construct the stable solutions for $N=3$ and $4$. We also numerically solve the gauge field dynamics and confirm that our analytic solutions are complete and attractor. It is straightforward to apply our procedure to the other simple Lie groups.

arXiv comment8 pages, 6 figures

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Cited by in corpus (8)

• Backreaction of axion-SU(2) dynamics during inflation
• Misalignment production of vector boson dark matter from axion-SU(2) inflation
• Stochastic formalism for U(1) gauge fields in axion inflation
• Chromo-natural inflation supported by enhanced friction from Horndeski gravity
• Effective Field Theory of Chiral Gravitational Waves
• How does SU($N$)-natural inflation isotropize the universe?
• Dark Energy with a Triplet of Classical U(1) Fields
• Thermal effects on warm chromoinflation