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

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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. 
@article{TMF_1987_70_2_a6,
     author = {V. B. Tverskoi},
     title = {Higher orders of perturbation theory in the neighborhood of a~classical solution},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {218--225},
     publisher = {mathdoc},
     volume = {70},
     number = {2},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1987_70_2_a6/}
}
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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/