http://arxiv.org/abs/1802.06174
We consider the extension of the Standard Model (SM) with a light inflaton where the unitarity problem in Higgs inflation is circumvented in the entire field space and the vacuum instability problem in the SM is solved at the same time. The linear non-minimal coupling of the inflaton to gravity leads to a significant kinetic mixing between the inflaton and the graviton such that perturbative unitarity is restored up to Planck scale. We show the correlation between unitarity scale and inflationary observables in this model and discuss how the effective Higgs inflation appears.
H. Lee
Tue, 20 Feb 18
7/54
Comments: 17 pages, 5 figures