Geodesic
Higher orders of perturbation theory in the neighborhood of a classical solution
Teoretičeskaâ i matematičeskaâ fizika, Tome 70 (1987) no. 2, pp. 218-225 
V. B. Tverskoi. Higher orders of perturbation theory in the neighborhood of a classical solution. Teoretičeskaâ i matematičeskaâ fizika, Tome 70 (1987) no. 2, pp. 218-225. http://geodesic.mathdoc.fr/item/TMF_1987_70_2_a6/
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     title = {Higher orders of perturbation theory in the neighborhood of a~classical solution},
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     url = {http://geodesic.mathdoc.fr/item/TMF_1987_70_2_a6/}
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Higher quantum perturbation theory orders in classical background are considered on the basis of the approach suggested in the previous paper. Expressions for the operator-valued field arguments are obtained and with the help of semiclassical LSZ-procedure, the scattering of a soliton and secondary field quanta is investigated. In terms of asymptotic fields an expression for the mass operator is obtained for which a precise physical interpretation is pointed out.

[1] Tverskoi V. B., Geizenbergovy polya v okrestnosti klassicheskogo resheniya, Preprint 85-147, IFVE, Serpukhov, 1985

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