Eb. Berdnikov et al., THE RELATIVISTIC THEORY FOR PRINCIPAL TRAJECTORIES AND ELECTROMAGNETIC-TRANSITIONS OF LIGHT MESONS .2., International journal of modern physics A, 8(15), 1993, pp. 2551-2567
On the basis of the results of Ref. 1, the electromagnetic transition
operator for the relativistic extended object has been constructed. Th
e noncommutativity of charge coordinates makes this problem nontrivial
. The system can be considered as a realistic model of light mesons.