Non-minimally assisted chaotic inflation

Conventional wisdom says that a chaotic inflation model with a power-law potential is ruled out by the recent Planck-BICEP/Keck results. We find, however, that the model can be assisted by a non-minimally coupled scalar field and still provides a successful inflation. Considering a power-law chaotic inflation model of the type V similar to phi(n) con with n = {2,4/3,1,2/3,1/3}, we show that n = 1/3 (n = {2/3,1/3}) may be revived with the help of the quadratic (quartic) non-minimal coupling of the assistant field to gravity.

Automated summary

The recent experimental results do not rule out the chaotic inflation model with a power-law potential when assisted by a non-minimally coupled scalar field.