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arXiv · 2207.02933

On the two-dimensional time-dependent anisotropic harmonic oscillator in a magnetic field

Pinaki Patra
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Abstract

A Charged harmonic oscillator in a magnetic field, Landau problems, and an oscillator in a noncommutative space, share the same mathematical structure in their Hamiltonians. We have considered a two-dimensional anisotropic harmonic oscillator (AHO) with arbitrarily time-dependent parameters (effective mass and frequencies), placed in an arbitrarily time-dependent magnetic field. A class of quadratic invariant operators (in the sense of Lewis and Riesenfeld) have been constructed. The invariant operators ($\hat{\mathcal{I}}$) have been reduced to a simplified representative form by a linear canonical transformation (the group $Sp(4, \mathbb{R})$). An orthonormal basis of the Hilbert space consisting of the eigenvectors of $\hat{\mathcal{I}}$ is obtained. In order to obtain the solutions of the time-dependent Schr\"{o}dinger equation corresponding to the system, both the geometric and dynamical phase-factors are constructed. Peres-Horodecki Separability Criterion for the bipartite coherent states corresponding to our system has been demonstrated.

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Pinaki Patra. 2022-06-30. On the two-dimensional time-dependent anisotropic harmonic oscillator in a magnetic field. https://doi.org/10.1063/5.0106709

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