Abstract
The quantum averaging method is applied to the Hamiltonian of the multifrequency resonance harmonic oscillator perturbed by a differential operator with polynomial coefficients. The twisted product is used to transfer the averaging procedure to the space of graded algebra of symbols. As a result, the averaged Hamiltonian is expressed in terms of generators of the quantum algebra of symmetries of the harmonic part of the Hamiltonian. The proposed approach to the operator averaging is used to solve the spectral problem for the Hamiltonian of the cylindrical Penning trap.
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References
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Acknowledgments
I am grateful to M. V. Karasev – my teacher and coauthor of the previous works on resonance algebras. I want to thank V. G. Danilov and V. E. Nazaikinskii for discussions of the work, advice, valuable remarks, and support. I am much obliged to R. K. Gaidukov for the help in mastering the Wolfram Mathematica package of symbol computations.
Funding
The study was implemented in the framework of the Basic Research Program at National Research University Higher School of Economics in 2020.
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Novikova, E.M. On Calculating the Coefficients in the Quantum Averaging Procedure for the Hamiltonian of the Resonance Harmonic Oscillator Perturbed by a Differential Operator with Polynomial Coefficients. Russ. J. Math. Phys. 28, 406–410 (2021). https://doi.org/10.1134/S1061920821030134
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DOI: https://doi.org/10.1134/S1061920821030134