Spiral Inflation with Coleman-Weinberg Potential

Abstract

We apply the idea of spiral inflation to Coleman-Weinberg potential, and show that inflation matching well observations is allowed for a symmetry-breaking scale ranging from an intermediate scale to GUT scale even if the quartic coupling $\lambda$ is of $\mathcal{O}(0.1)$. The tensor-to-scalar ratio can be of $\mathcal{O}(0.01)$ in case of GUT scale symmetry-breaking.

arXiv comment5 pages, 4 figures, typos corrected, references added

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• Planck 2013 results. XVI. Cosmological parameters
• Monodromy in the CMB: Gravity Waves and String Inflation
• Gravity Waves and Linear Inflation from Axion Monodromy
• Dante's Inferno
• Coleman-Weinberg Inflation in light of Planck
• Sub-Planckian Two-Field Inflation Consistent with the Lyth Bound
• Spiral Inflation

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