Geodesic
Analytic properties of the ground-state energy in the one-dimensional Hubbard model
Teoretičeskaâ i matematičeskaâ fizika, Tome 11 (1972) no. 1, pp. 127-129 
I. A. Misurkin; A. A. Ovchinnikov. Analytic properties of the ground-state energy in the one-dimensional Hubbard model. Teoretičeskaâ i matematičeskaâ fizika, Tome 11 (1972) no. 1, pp. 127-129. http://geodesic.mathdoc.fr/item/TMF_1972_11_1_a12/
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     title = {Analytic properties of the ground-state energy in the one-dimensional {Hubbard} model},
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Voir la notice de l'article provenant de la source Math-Net.Ru

A study is made of the analytic properties of the ground-state energy as a function of the coupling constant $c$ for a one-dimensional system of electrons described by the Hubbard Hamiltonian. It i s shown that the exact solution for the energy can be represented in the form of an asymptotic series in $c$.

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[3] I. A. Misurkin, A. A. Ovchinnikov, FTT, 12 (1970), 2524

[4] A. A. Ovchinnikov, ZhETF, 57 (1969), 2137

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[6] M. Takahashi, Preprint, Tokyo, 1970