Geodesic
Uniqueness of the~Pohlmeyer--Lund--Regge system
Teoretičeskaâ i matematičeskaâ fizika, Tome 210 (2022) no. 3, pp. 422-429

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We prove that the Pohlmeyer–Lund–Regge system is, up to coordinate changes, the unique two-component variational system of chiral type with an irreducible metric that admits a Lax representation with values in the algebra $\mathfrak{so}(3)$.
Keywords: chiral-type system, integrable system, Lax representation, Pohlmeyer–Lund–Regge system. 
@article{TMF_2022_210_3_a6,
     author = {A. V. Balandin},
     title = {Uniqueness of {the~Pohlmeyer--Lund--Regge} system},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {422--429},
     publisher = {mathdoc},
     volume = {210},
     number = {3},
     year = {2022},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2022_210_3_a6/}
}
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A. V. Balandin. Uniqueness of the~Pohlmeyer--Lund--Regge system. Teoretičeskaâ i matematičeskaâ fizika, Tome 210 (2022) no. 3, pp. 422-429. http://geodesic.mathdoc.fr/item/TMF_2022_210_3_a6/