Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On The Relativistic Classical Motion of a Radiating Spinning Particle in
  a Magnetic Field   We propose classical equations of motion for a charged particle with magnetic
moment, taking radiation reaction into account. This generalizes the
Landau-Lifshitz equations for the spinless case. In the special case of
spin-polarized motion in a constant magnetic field (synchrotron motion) we
verify that the particle does lose energy. Previous proposals did not predict
dissipation of energy and also suffered from runaway solutions analogous to
those of the Lorentz-Dirac equations of motion.

17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph