592 research outputs found
Park--Tarter Matrix for a Dyon--Dyon System
The problem of separation of variables in a dyon--dyon system is discussed. A
linear transformation is obtained between fundamental bases of this system.
Comparison of the dyon--dyon system with a 4D isotropic oscillator is carried
out.Comment: 9 pages, LaTeX fil
A non-perturbative method of calculation of Green functions
A new method for non-perturbative calculation of Green functions in quantum
mechanics and quantum field theory is proposed. The method is based on an
approximation of Schwinger-Dyson equation for the generating functional by
exactly soluble equation in functional derivatives. Equations of the leading
approximation and the first step are solved for -model. At
(anharmonic oscillator) the ground state energy is calculated. The
renormalization program is performed for the field theory at . At
the renormalization of the coupling involves a trivialization of the theory.Comment: 13 pages, Plain LaTex, no figures, some discussion of results for
anharmonic oscillator and a number of references are added, final version
published in Journal of Physics
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