SELF-ACTION ON A CURRENT WITH INTERNAL STRUCTURE IN COSMIC-STRING SPACE-TIMES

We calculate the topological self-energy of the stationary linear dist ribution of a four-current with zero total current and a charge per un it length in the space-time of a straight cosmic string. It is shown t hat if the structure of a current is determined in the first approxima tion by its electric and magnetic dipole moments, then the self force is not equal to zero and the current is also affected by the action of a moment of force which has a topological nature. The generalization of the obtained results for the space-time of multiple cosmic string i s also discussed.