Abstract
We consider generalizations of the classical nonlinear Schrödinger equation, iψt = ψxx + 2ψψ+ψ, to operator functions ψ=ψ(x,t) and their solvability via the inverse scattering method. This provides a new class of soluble field theories in one-space, one-time dimensions, which, after quantization, are equivalent to a system of many, nonidentical, particles with σ-function interactions and a spectrum of bound states richer than in the usual model.
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Chudnovsky, D.V., Chudnovsky, G.V., Neveu, A. (1982). Classical and quantum operator nonlinear schrodinger equation. I. In: Chudnovsky, D.V., Chudnovsky, G.V. (eds) The Riemann Problem, Complete Integrability and Arithmetic Applications. Lecture Notes in Mathematics, vol 925. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0093507
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DOI: https://doi.org/10.1007/BFb0093507
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