Geodesic
Calculation of the superpropagators of massive particles in nonpolynomial quantum field theories
Teoretičeskaâ i matematičeskaâ fizika, Tome 42 (1980) no. 2, pp. 184-194 
N. M. Atakishiyev; A. T. Filippov. Calculation of the superpropagators of massive particles in nonpolynomial quantum field theories. Teoretičeskaâ i matematičeskaâ fizika, Tome 42 (1980) no. 2, pp. 184-194. http://geodesic.mathdoc.fr/item/TMF_1980_42_2_a2/
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     title = {Calculation of~the superpropagators of~massive particles in~nonpolynomial quantum field theories},
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Voir la notice de l'article provenant de la source Math-Net.Ru

A method of constructing the superpropagators of massive particles, i.e. the Fouries transforms of the two point Green's functions $F(x)=\sum_{n=1}^\infty c(n)[\lambda\Delta_F(x)]^n$ in the quantum field theories with nonpolynomial Lagrangians is proposed. The method is based on applying definite differential operators in the coupling constant $\lambda$ to the simplest superpropagator for which the modified perturbation theory expansion in the powers of $\lambda$ and $\ln\lambda$ is found.

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