# Inflection-Point Sgoldstino Inflation in no-Scale Supergravity

## TL;DR

This paper introduces a modified no-scale supergravity model with a kinetic pole that enables inflection-point inflation compatible with observational data, high-scale SUSY, and LHC Higgs results.

## Contribution

It presents a novel supergravity framework incorporating sgoldstino stabilization and tunable cosmological constant for inflation.

## Key findings

- Achieves inflation near an inflection point with subplanckian fields.
- Predicts a tiny tensor-to-scalar ratio and a running of ns around -3x10^-3.
- Compatible with high-scale SUSY and Higgs mass measurements.

## Abstract

We propose a modification of no-scale supergravity models which incorporates sgoldstino stabilization and supersymmetry (SUSY) breaking with a tunable cosmological constant by introducing a Kahler potential which yields a kinetic pole of order one. The resulting scalar potential may develop an inflection point, close to which an inflationary period can be realized for subplanckian field values consistently with the observational data. For central value of the spectral index ns, the necessary tuning is of the order of 10^-6, the tensor-to-scalar ratio is tiny whereas the running of ns is around -3x10^-3. Our proposal is compatible with high-scale SUSY and the results of LHC on the Higgs boson mass.