The introduction of a uniform background magnetic field breaks three-dimensional spatial symmetry for a charged particle. This makes standard quark operators inefficient at isolating the nucleon correlation function at nontrivial field strengths. We introduce novel quark operators constructed from the two-dimensional Landau modes that describe a charged particle on a finite lattice. These Landau mode quark operators provide enhanced precision when calculating the energy of the neutron in a magnetic field, and hence the determination of the magnetic moment and polarisability.

Hadron Spectroscopy and Interactions