3 papers
hep-th2000
On the effective action of local composite fields
S. A. Garnov
The gauge invariant method for calculation of the effective action of the local composite fields in QFT is proposed. The effective action of the local composite fields in QED is st…
hep-th1997
On the higher-loop effective action in NJL model
S. A. Garnov
The 3-loop effective action and effective potential in Nambu - Jona-Lasinio model are calculated. The problem of vanishing contributions in the higher orders is discussed. The gene…
hep-ph1996
Renormalization conditions and non-diagrammatic approach to renormalizations
B. A. Faizullaev, S. A. Garnov
The representation of the bare parameters of Lagrangian in terms of total vertex Green's functions is used to obtain the general form of renormalization conditions. In the framewor…