Geodesic
Exact solution for the partition function of a system of interacting fermions
Teoretičeskaâ i matematičeskaâ fizika, Tome 68 (1986) no. 1, pp. 106-116
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A simple method for passing from lattice statistical models to systems of interacting fermions is proposed. Two systems of free fermions coupled by a four-particle interaction of one type are considered. The general properties of the model are investigated, and an exact solution to the problem is obtained for a specific case. 
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M. P. Zhelifonov; B. S. Nikitin. Exact solution for the partition function of a system of interacting fermions. Teoretičeskaâ i matematičeskaâ fizika, Tome 68 (1986) no. 1, pp. 106-116. http://geodesic.mathdoc.fr/item/TMF_1986_68_1_a8/

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