On unification of gravitation and electromagnetism in the framework of a general-relativistic approach

We consider the unification problem for the gravitational and electromagnetic interactions and its possible solution on the basis of the existence of an effective Riemannian space in nonlinear electrodynamicsComment: 3 pages, Talk given at the International Conference RUSGRAV-13, June 23-28, 2008, PFUR, Mosco

Gravitation as an Effect of Nonlinear Electrodynamics

We consider an approach to unification of the gravitational and electromagnetic interactions based on the existence of an effective Riemannian space in nonlinear electrodynamics. In the context of this approach, we discuss the possibility of screening the gravitational field.Comment: 3 pages, On basis of the talk given at the International Conference RUDN-10, June 28 - July 3, 2010, PFUR, Mosco

The field nature of spin for electromagnetic particle

The field nature of spin in the framework of the field electromagnetic particle concept is considered. A mathematical character of the fine structure constant is discussed. Three topologically different field models for charged particle with spin are investigated in the scope of the linear electrodynamics. A using of these field configurations as an initial approximation for an appropriate particle solution of nonlinear electrodynamics is discussed.Comment: 4 pages, talk given at The 17th International Spin Physics Symposium, SPIN2006, October 2-7, 2006, Kyoto, Japa