A canonical formalism is introduced to analytically compute quantum fluctuations in positions, velocities, norms, and phases of solitons within 2- and 3-soliton breathers of the nonlinear Schrödinger equation after a coupling constant quench.
To compare our results to the previously reported results, it is necessary to express the COM and relative parameters in terms of the conjugate pairs from
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A canonical approach to quantum fluctuations
A canonical formalism is introduced to analytically compute quantum fluctuations in positions, velocities, norms, and phases of solitons within 2- and 3-soliton breathers of the nonlinear Schrödinger equation after a coupling constant quench.