Supergravity based inflation models: a review

TL;DR

This review covers supergravity-based inflation models, addressing challenges, solutions, and specific examples like chaotic and Higgs inflation, with relevance to upcoming experimental tests such as tensor perturbations detection.

Contribution

It provides a comprehensive overview of supergravity inflation models, highlighting methods to overcome theoretical difficulties and presenting concrete examples relevant to current and future experiments.

Findings

Chaotic inflation models in supergravity can produce observable tensor perturbations.

Supergravity models can be constructed to evade initial difficulties in realizing inflation.

Higgs inflation in Jordan frame supergravity offers a viable alternative scenario.

Abstract

In this review, we discuss inflation models based on supergravity. After explaining the difficulties in realizing inflation in the context of supergravity, we show how to evade such difficulties. Depending on types of inflation, we give concrete examples, particularly paying attention to chaotic inflation because the ongoing experiments like Planck might detect the tensor perturbations in near future. We also discuss inflation models in Jordan frame supergravity, motivated by Higgs inflation.