Dynamics of wave packets in quantum systems subjected to a friction force and
impulse feedback is investigated in context of Schrödinger-Langevin-Kostin (SchLK)
equation. The quantum systems with a quadratic potential bounded by impenetrable walls of a
well are presented as examples. Numerical simulations are carried out for initial Gaussian
packet at varied values of a friction coefficient and amplitudes of the impulse feedback.
Informative and structural properties of the wave packets are analyzed by using Fourier
transform of dynamical variables and their means, of autocorrelation Nauenberg's function.
Coherent oscillations of the wave packets and transition to chaotic dynamics are found.
Influence of friction on oscillatory dynamics is discussed.
Keywords: quantum systems with friction and feedback; Schrödinger-Langevin-Kostin equation
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