# Axion Inflation and Affleck-Dine Baryogenesis

## TL;DR

This paper investigates how axion fields influence Affleck-Dine baryogenesis, showing that axion oscillations can generate sufficient baryon asymmetry post-inflation without requiring soft supersymmetry-breaking terms, especially in string axion inflation models.

## Contribution

It demonstrates a novel baryogenesis mechanism driven by axion oscillations, applicable to string axion inflation, bypassing the need for soft supersymmetry-breaking A-terms.

## Key findings

- Axion oscillations produce enough baryon asymmetry after inflation.
- The mechanism works without soft supersymmetry-breaking A-terms.
- Applicable to string axion inflation scenarios.

## Abstract

String theory generically predicts the coupling between the Affleck-Dine field and axion field through higher-dimensional operators. We thus explore the Affleck-Dine baryogenesis on an axion background. It turns out that the axion oscillation produces an enough amount of baryon asymmetry of the Universe just after the inflation, even without a soft supersymmetry-breaking $A$-term. This baryogenesis scenario is applicable to the string axion inflation.