arXiv:1001.2896v2 [physics.gen-ph] 25 Sep 2010 Full Action for an Electromagnetic Field with Electrical and Magnetic Charges S. S. Serova Physics Faculty, St. Petersburg State University, St. Petersburg, Russia S. A. Serov ∗ Russian Federal Nuclear Centre – All-Russian Scientific Research Institute of Experimental Physics, Institute of Theoretical and Mathematical Physics, Sarov, Russia (Dated: February 7, 2018) Abstract The paper offers the full action for an electromagnetic field with electrical and magnetic charges; it is marked, that it is hard to give an accurate formulation of Feynman laws for the calculation of the interaction cross-sections for electrically and magnetically charged particles on the base of offerd action within relativistic quantum field theory, simple partial case of a constant electromagnetic field is considered. PACS numbers: 14.80.Hv Keywords: magnetic monopole ∗ serov@vniief.ru 1