Geodesic
Vacuum degeneration and spurion formalism for the rotation group
Teoretičeskaâ i matematičeskaâ fizika, Tome 1 (1969) no. 2, pp. 182-186 
A. N. Vasil'ev; A. F. Yakubov. Vacuum degeneration and spurion formalism for the rotation group. Teoretičeskaâ i matematičeskaâ fizika, Tome 1 (1969) no. 2, pp. 182-186. http://geodesic.mathdoc.fr/item/TMF_1969_1_2_a1/
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Voir la notice de l'article provenant de la source Math-Net.Ru

It is shown that, when vacuum degenerates in accordance with the rotation group, the appearance of additional (relative to the field) system degrees of freedom may be described by means of introducing spurion creation-annihilation operators (in the same manner as for the gage group considered previously, [4]).

[1] R. Haag, Phys. Rev., 112 (1958), 669 | DOI | MR | Zbl

[2] D. Ruelle, Helv. Phys. Acta, 35 (1962), 147 | MR | Zbl

[3] I. M. Gelfand, R. A. Minlos, Z. Ya. Shapiro, Predstavleniya gruppy vraschenii i gruppy Lorentsa, Fizmatgiz, 1958

[4] A. N. Vassilev, Comm. math. phys., 13 (1969), 102 | DOI | MR

[5] A. N. Vassilev, Comm. math. phys., 13 (1969), 81 | DOI | MR