Geodesic
Quantum nonlinear Schrödinger equation on a lattice
Teoretičeskaâ i matematičeskaâ fizika, Tome 66 (1986) no. 3, pp. 455-462 
N. M. Bogolyubov; V. E. Korepin. Quantum nonlinear Schrödinger equation on a lattice. Teoretičeskaâ i matematičeskaâ fizika, Tome 66 (1986) no. 3, pp. 455-462. http://geodesic.mathdoc.fr/item/TMF_1986_66_3_a11/
@article{TMF_1986_66_3_a11,
     author = {N. M. Bogolyubov and V. E. Korepin},
     title = {Quantum nonlinear {Schr\"odinger} equation on a~lattice},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {455--462},
     year = {1986},
     volume = {66},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1986_66_3_a11/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

A local Hamiltonian is constructed for the nonlinear Schrödinger equation on a lattice in both the classical and the quantum variants. This Hamiltonian is an explicit elementary function of the local Bose fields. The lattice model possesses the same structure of the action–angle variables as the continuous model.

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