Abstract
A system is considered consisting of a harmonic oscillator and a field interacting with it. A quadratic Lagrangian is used, so that the model is exactly solvable. Under some conditions, the model exhibits a dissipative behavior of a selected oscillator. A canonical transformation is found which brings the Hamiltonian to a diagonal form, which is used to compute the quantum correlation and spectral functions of the oscillator fluctuations. It is found that the model allows for a low-frequency spectrum of the form\(\left| \omega \right|^{ - 1 + \varepsilon } \) for the driving force, and\(\left| \omega \right|^{ - 1 - \varepsilon } \) for the oscillator coordinate (Flicker noise).
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 10, pp. 13–18, October, 1990.
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Dinariev, O.Y. Fluctuation spectrum in an exactly solvable model with dissipation: A new model of the Flicker noise. Soviet Physics Journal 33, 821–826 (1990). https://doi.org/10.1007/BF00897301
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DOI: https://doi.org/10.1007/BF00897301