Inflation in the nonminimal theory with `K(phi)R' term

TL;DR

This paper explores inflationary models with a nonminimal `K(phi)R' coupling, demonstrating that successful inflation occurs when the ratio of the squared coupling to the potential approaches a constant asymptotically.

Contribution

It introduces a condition on the ratio of the nonminimal coupling squared to the potential for successful inflation in `K(phi)R' models.

Findings

Inflation is viable when the ratio `K(phi)^2 / V(phi)` approaches a constant.

The model provides a new criterion for inflationary dynamics with nonminimal couplings.

The results help understand conditions for inflation in theories with `K(phi)R' terms.

Abstract

A class of inflationary models with the nonminimal coupling term `K(phi)R' is considered. We show that the successful inflation can take place if the ratio between the square of the nonminimal coupling term and the potential for the scalar goes asymptotically constant.