Geodesic
Exact asymptotic methods in the band theory of magnetism
Teoretičeskaâ i matematičeskaâ fizika, Tome 24 (1975) no. 3, pp. 419-424 
B. V. Moshchinskii; V. K. Fedyanin. Exact asymptotic methods in the band theory of magnetism. Teoretičeskaâ i matematičeskaâ fizika, Tome 24 (1975) no. 3, pp. 419-424. http://geodesic.mathdoc.fr/item/TMF_1975_24_3_a13/
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Voir la notice de l'article provenant de la source Math-Net.Ru

The model hamiltonian, describing the exchange interaction as well as the Coulomb interection is considered. The mazoration method by N. N. Bogoliubov (Jr.) is used. On the base the approximate hamiltonian, which is equivalent to the initial one the system of the nonlinear integral equations for the order parameter is obtained and discussed.

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