Diagram technique for Hubbard operators
Teoretičeskaâ i matematičeskaâ fizika, Tome 19 (1974) no. 3, pp. 423-429
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A diagram technique for Hubbard operators is proposed on the basis of the Wick theorem and cumulant expansions. A prescription is given for calculating the Green's functions and correlation functions constructed from such operators.
@article{TMF_1974_19_3_a12,
author = {P. M. Slobodyan and I. V. Stasyuk},
title = {Diagram technique for {Hubbard} operators},
journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
pages = {423--429},
publisher = {mathdoc},
volume = {19},
number = {3},
year = {1974},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/TMF_1974_19_3_a12/}
}
P. M. Slobodyan; I. V. Stasyuk. Diagram technique for Hubbard operators. Teoretičeskaâ i matematičeskaâ fizika, Tome 19 (1974) no. 3, pp. 423-429. http://geodesic.mathdoc.fr/item/TMF_1974_19_3_a12/