# On the high-scale instanton interference effect: axion models without domain wall problem

## TL;DR

This paper proposes a new axion model where a chiral, confining interaction dynamically breaks Peccei-Quinn symmetry, solving the domain wall problem and avoiding heavy relics, leading to an invisible QCD axion without domain walls.

## Contribution

Introduction of a chiral, confining interaction that dynamically breaks Peccei-Quinn symmetry and eliminates the domain wall problem in axion models.

## Key findings

- A new axion model without domain walls.
- No dangerous heavy relics in the theory.
- Potential for a viable invisible QCD axion model.

## Abstract

We show that a new chiral, confining interaction can be used to break Peccei-Quinn symmetry dynamically and solve the domain wall problem, simultaneously. The resulting theory is an invisible QCD axion model without domain walls. No dangerous heavy relics appear.