Geodesic
Reux operators of physical variables and the method of quasiaverages
Teoretičeskaâ i matematičeskaâ fizika, Tome 18 (1974) no. 1, pp. 121-129 
S. V. Peletminskii; A. I. Sokolovsky. Reux operators of physical variables and the method of quasiaverages. Teoretičeskaâ i matematičeskaâ fizika, Tome 18 (1974) no. 1, pp. 121-129. http://geodesic.mathdoc.fr/item/TMF_1974_18_1_a11/
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Voir la notice de l'article provenant de la source Math-Net.Ru

General expressions are found for the operators of the flux densities of physical variables in terms of the density operators of these variables. The method of quasiaverages and the expressions found for the flux operators are used to obtain the averages of these operators in terms of the thermodynamic potential in a state of statistical equilibrium of a superfluid liquid.

[1] N. N. Bogolyubov, Preprint P-1395, OIYaI, 1963

[2] N. N. Bogolyubov, Preprint R-1451, OIYaI, 1963

[3] L. D. Landau, ZhETF, 14 (1944), 112