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Lewis-Riesenfeld quantization and SU(1,1) coherent states for 2D damped harmonic oscillator

Mathematical Physics 2018-11-09 v2 High Energy Physics - Theory math.MP Quantum Physics

Abstract

In this paper we study a two-dimensional [2D] rotationally symmetric harmonic oscillator with time-dependent frictional force. At the classical level, we solve the equations of motion for a particular case of the time-dependent coefficient of friction. At the quantum level, we use the Lewis-Riesenfeld procedure of invariants to construct exact solutions for the corresponding time-dependent Schr\"{o}dinger equations. The eigenfunctions obtained are in terms of the generalized Laguerre polynomials. By mean of the solutions we verify a generalization version of the Heisenberg's uncertainty relation and derive the generators of the su(1,1)su(1,1) Lie algebra. Based on these generators, we construct the coherent states aˋ\grave{\textrm{a}} la Barut-Girardello and aˋ\grave{\textrm{a}} la Perelomov and respectively study their properties.

Keywords

Cite

@article{arxiv.1805.02484,
  title  = {Lewis-Riesenfeld quantization and SU(1,1) coherent states for 2D damped harmonic oscillator},
  author = {Latévi M. Lawson and Gabriel Y. H. Avossevou and Laure Gouba},
  journal= {arXiv preprint arXiv:1805.02484},
  year   = {2018}
}

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27 pages