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arxiv: 1805.02484 · v2 · pith:7WUKOH5Dnew · submitted 2018-05-07 · 🧮 math-ph · hep-th· math.MP· quant-ph

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

classification 🧮 math-ph hep-thmath.MPquant-ph
keywords time-dependentcoherentconstructequationsgeneratorsgraveharmoniclevel
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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 $su(1,1)$ Lie algebra. Based on these generators, we construct the coherent states $\grave{\textrm{a}}$ la Barut-Girardello and $\grave{\textrm{a}}$ la Perelomov and respectively study their properties.

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