# Radiative Axion Inflation

## TL;DR

This paper demonstrates that radiative corrections in KSVZ axion inflation models can produce a viable inflationary plateau compatible with Planck data, predicting heavy quark masses above 1000 TeV.

## Contribution

It shows how radiative corrections enable axion inflation models, specifically KSVZ, to match observational data, which was previously challenging.

## Key findings

- Radiative plateau can be generated in KSVZ axion inflation.
- Heavy quarks are predicted to have masses above 1000 TeV.
- Inflationary observables are consistent with Planck data.

## Abstract

Planck data robustly exclude the simple $\lambda\phi^4$ scenario for inflation. This is also the case for models of Axion Inflation in which the inflaton field is the radial part of the Peccei-Quinn complex scalar field. In this letter we show that for the KSVZ model it is possible to match the data taking into account radiative corrections to the tree level potential. After writing down the 1-loop Coleman-Weinberg potential, we show that a radiative plateau is easily generated thanks to the fact that the heavy quarks are charged under $SU(3)_c$ in order to solve the strong CP problem. We also give a numerical example for which the inflationary observables are computed and the heavy quarks are predicted to have a mass $m_Q \gtrsim 10^3TeV$.