Nonpolynomial Lagrangians (higher perturbation orders)
Abstract
It is shown that a theory with a nonpolynomial Lagrangian remains finite in higher perturbation orders in the principal coupling constant $G$ . It is also shown that the $S$ matrix remains
unitary in the third perturbation order in $G$ . The order of growth of the scattering amplitude is found in an arbitrary perturbation order.
Submission history
[v1] 1972