Abstract
We implement at the Lagrangian level a "natural" electromagnetic coupling prescription, different from the minimal one, and proposed a long time ago by Weinberg. This prescription yields, for elementary particles of arbitrary-spin, a gyromagnetic ratio at the tree level. This value is already known to arise in renormalizable theories for spin ½ and spin 1, is suggested by the classical, relativistic equations of the spin polarization, and is also found for arbitrary-spin, charged excitations of the open string.
- Received 7 April 1992
DOI:https://doi.org/10.1103/PhysRevD.46.3529
©1992 American Physical Society