Abstract

The Darboux transformation operator method is applied to the investigation of coherent states of transparent multisoliton potentials. An isometric correspondence between Hilbert spaces of the states of a free particle and a particle moving in the soliton potential is established. It is shown that the Darboux transformation operator being unbounded and closed cannot realize an isometric mapping between Hilbert spaces. A quasispectral representation of transformation operators in terms of continuous basis sets is obtained. Different families of coherent states of the multisoliton potential are introduced. Measures that realize the resolution of the unity in terms of the projectors on the coherent states vectors are calculated. These measures are defined by ordinary smooth functions for the states obtained with the help of bounded transformation operators and by generalized ones otherwise.

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