Geodesic
Representation of symmetry group transformation operators in the interaction picture
Teoretičeskaâ i matematičeskaâ fizika, Tome 73 (1987) no. 2, pp. 311-315

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A representation similar to the Dyson time-ordered exponent is obtained for the operators of arbitrary continuous symmetry group transformations of interacting quantum field system. The exponent is given by the integral of the interaction Hamiltonian density in the Dirac picture over the space-time region determined by the symmetry transformation. 
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     author = {G. P. Jorjadze and A. N. Kvinikhidze and A. M. Khvedelidze},
     title = {Representation of symmetry group transformation operators in the interaction picture},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {311--315},
     publisher = {mathdoc},
     volume = {73},
     number = {2},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1987_73_2_a14/}
}
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G. P. Jorjadze; A. N. Kvinikhidze; A. M. Khvedelidze. Representation of symmetry group transformation operators in the interaction picture. Teoretičeskaâ i matematičeskaâ fizika, Tome 73 (1987) no. 2, pp. 311-315. http://geodesic.mathdoc.fr/item/TMF_1987_73_2_a14/