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A perturbation method to analytically describe the dynamics of a classicalspinning particle, based on the Mathisson-Papapetrou-Dixon (MPD) equations ofmotion, is presented. By a power series expansion with respect to theparticle's spin magnitude, it is shown how to obtain in general form ananalytic representation of the particle's kinematic and dynamical degrees offreedom that is formally applicable to infinite order in the expansion. Withinthis formalism, it is possible to identify a classical analogue of radiativecorrections to the particle's mass and spin due to spin-gravity interaction.The robustness of this approach is demonstrated by showing how to explicitlycompute the first-order momentum and spin tensor components for arbitraryparticle motion in a general space-time background. Potentially interestingapplications based on this perturbation approach are outlined.

An Analytic Perturbation Approach for Classical Spinning Particle Dynamics