Magnetic properties of the neutron in a uniform background field

TL;DR

This paper reports lattice QCD calculations of the neutron's magnetic properties using background magnetic fields, exploring fit improvements and initial results for negative parity states.

Contribution

It introduces a detailed lattice QCD approach to compute neutron magnetic properties in a uniform background field, including fit optimization techniques.

Findings

Calculated neutron magnetic moment and polarisability from lattice data.

Explored different fit strategies to enhance result accuracy.

Presented initial results for negative parity nucleon states.

Abstract

We present calculations of the magnetic moment and magnetic polarisability of the neutron from the background field method. The calculations are performed on $32^3\times64$ dynamical lattices generated by the PACS-CS collaboration and made available via the ILDG. We consider uniform fields quantised by the periodic spatial volume. We explore different approaches for improving the quality of the fits used in the results. Also included are initial results for the magnetic moment of the lowest lying negative parity nucleon states.