Geodesic
Quantum Floquet functions
Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 4, Tome 131 (1983), pp. 128-141 
N. Yu. Reshetikhin; F. A. Smirnov. Quantum Floquet functions. Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 4, Tome 131 (1983), pp. 128-141. http://geodesic.mathdoc.fr/item/ZNSL_1983_131_a11/
@article{ZNSL_1983_131_a11,
     author = {N. Yu. Reshetikhin and F. A. Smirnov},
     title = {Quantum {Floquet} functions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {128--141},
     year = {1983},
     volume = {131},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1983_131_a11/}
}
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Voir la notice du chapitre de livre provenant de la source Math-Net.Ru

The quantum analog of the Floquet solution to the auxilary linear problem for the lattice version of the nonlinear Schrödinger equation is presented. Applications to the quantum Gelfand–Levitan–Marcheriko equations are envisaged.