Kirichenko I. The field-theory description of the electromagnetic disintegration of coupled systems

Subject of study: the process of electromagnetic disintegration of coupled few-nucleon systems in energy interval beginning reaction threshold to meson formation. Objective: development of new approach in theory of photo- and electro-disintegration of coupled few-nucleon systems. Methods: local calibration transformations, covariance principles and gauge invariance. Results novelty. The gauge invariant approach of the interaction between coupled few-nucleon systems and an electromagnetic field is developed. The method of the covariant factorization of non-coherent polar contributions in the amplitude of electro-disintegration process is developed. The relativistic invariant determination of the function in the effective impulse distribution of nucleons in deuteron is formulated. Reletivistic generelization of Y-scalling is formulated. The unitary approach is proposed for reactions of three-nucleon nuclear systems with photons and electrons, admitting the description of the processes under in vestigation on the basis of the same hadron currents when virtual photons, transit to real. Field of applications: quantum field theory, quantun electrodinamics, nuclear physics.