Margarita CHICHIKINA
Chair of Quantum Field Theory and High Energy Physics,
Physical Department, Moscow State University,
Moscow, 119992 RUSSIA
E-mail: chich@hep.phys.msu.su

Quantization of nonlinear fields on the classical background by means of Bogoliubov group variables

Abstract:
The problem of quantization of scalar field on the classical background in the curved space-time is solved by means of Bogoliubov group variables. This approach permits to combine accurate account of conservation laws and perturbation thepry and avoid zero-mode problem.