Geodesic
Spectrum and eigenfunctions of the transfer matrix of a~two-dimensional Gaussian model
Teoretičeskaâ i matematičeskaâ fizika, Tome 51 (1982) no. 2, pp. 259-267

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For a Gaussian model on a two-dimensional lattice a family of commuting transfer matrices is constructed. The spectrum and eigenfunctions of a transfer matrix are found. The unitarity relation for the transfer matrix is satisfied on a finite lattice up to a numerical factor which tends to unity in the limit of an infinite lattice. The transfer matrix leads to a local Hamiltonian of a free massive scalar field. 
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     author = {H. M. Babujian and M. G. Tetel'man},
     title = {Spectrum and eigenfunctions of the transfer matrix of a~two-dimensional {Gaussian} model},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {259--267},
     publisher = {mathdoc},
     volume = {51},
     number = {2},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1982_51_2_a11/}
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H. M. Babujian; M. G. Tetel'man. Spectrum and eigenfunctions of the transfer matrix of a~two-dimensional Gaussian model. Teoretičeskaâ i matematičeskaâ fizika, Tome 51 (1982) no. 2, pp. 259-267. http://geodesic.mathdoc.fr/item/TMF_1982_51_2_a11/