paper

Electromagnetic Deflection of Spinning Particles

arXiv:hep-ph/9312256 · doi:10.1142/S0217751X94000212

Abstract

We show that it is possible to obtain self-consistent and physically acceptable relativistic classical equations of motion for a point-like spin-half particle possessing an electric charge and a magnetic dipole moment, directly from a manifestly covariant Lagrangian, if the classical degrees of freedom are appropriately chosen. It is shown that the equations obtained encompass the well-tested Lorentz force and Thomas--Bargmann--Michel--Telegdi spin equations, as well as providing a definite specification of the classical _magnetic_dipole_ force_, whose exact form has been the subject of recent debate. Radiation reaction---the force and torque on an accelerated particle due to its self-interaction---is neglected at this stage.

18 pp. (latex, uses revtex 3), UM-P-92/93

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