# Dipole-dipole interactions between neutrons

## TL;DR

This paper investigates the dipole-dipole interactions involving neutrons and conducting surfaces using electromagnetic polarizabilities derived from chiral EFT, with implications for ultracold neutron confinement.

## Contribution

It provides a detailed analysis of neutron interactions with walls and other neutrons based on chiral EFT data, extending understanding of neutron behavior in confined environments.

## Key findings

- Quantitative interaction potentials between neutrons and conducting walls.
- Interaction characteristics between two neutrons at various distances.
- Relevance to ultracold neutron confinement physics.

## Abstract

In this work we present results of the dipole-dipole interactions between two neutrons, a neutron and a conducting wall, and a neutron between two walls. As input, we use dynamical electromagnetic dipole polarizabilities fitted to chiral EFT results up to the pion production threshold and at the onset of the Delta resonance. Our work can be relevant to the physics of confined ultracold neutrons inside bottles.