Symmetry-assisted computation of the magnetic field at the site of a point dipole

Abstract In this paper, we revisit the concept of the magnetic field at the site of a magnetic dipole using symmetry arguments that are mathematically rigorous and, for students with a first course in group theory, well suited to advanced undergraduate and graduate courses in electrodynamics and quantum mechanics. Furthermore, we present symmetry-based results that go beyond those discussed in the standard literature, which are directly relevant to fundamental problems in two-dimensional physics.