Embedding (R+R^2)-Inflation into Supergravity

TL;DR

This paper demonstrates how to embed the (R+R^2)-inflation model into N=1 F()-supergravity, providing a simple realization of chaotic inflation with specific conditions on the supergravity function.

Contribution

It introduces a natural embedding of (R+R^2)-inflation into supergravity, highlighting the role of the (()-function's Taylor expansion for slow-roll inflation.

Findings

Successful embedding of (R+R^2)-inflation into supergravity.

Identification of the (()-function's ()^3-term as crucial for inflation.

Viable realization of chaotic inflation within supergravity framework.

Abstract

We find the natural embedding of the (R+R^2)-inflationary model into the recently constructed N=1 F(\cal R)-supergravity. It gives a simple and viable realization of chaotic inflation in supergravity. The only requirement for a slow-roll inflation is the existence of the (\cal R)^3-term with an anomalously large coefficient in Taylor expansion of the F(\cal R) function, where \cal R is the covariantly-chiral scalar supercurvature superfield.