Quasi Scale-Invariant Inflationary Attractors

Abstract

We show that pure quadratic gravity with quantum loop corrections yields a viable inflationary scenario. We also show that a large family of models in the Jordan frame, with softly-broken scale invariance, corresponds to the same theory with linear inflaton potential in the Einstein frame. It follows that all these quasi scale-invariant models have the same relation between the tensor-to-scalar ratio and the scalar spectral index, which is also consistent with the current data. Thus, they form a family of attractors, which is sharply distinct from the recently discovered $\alpha$-attractors of Kallosh, Linde et al.

Contribution to the Proceedings of the 14th Marcel Grossmann Meeting, Rome 2015

References in corpus (3)

• Pole Inflation - Shift Symmetry and Universal Corrections
• Inflationary quasi-scale invariant attractors
• Scale-invariant rotating black holes in quadratic gravity

Cited by in corpus (1)

• Generalized Pole Inflation: Hilltop, Natural, and Chaotic Inflationary Attractors