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arXiv · 2105.01486

Exactly solvable time-dependent non-Hermitian quantum systems from point transformations

Andreas Fring·Rebecca Tenney
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Abstract

We demonstrate that complex point transformations can be used to construct non-Hermitian first integrals, time-dependent Dyson maps and metric operators for non-Hermitian quantum systems. Initially we identify a point transformation as a map from an exactly solvable time-independent system to an explicitly time-dependent non-Hermitian Hamiltonian system. Subsequently we employ the point transformation to construct the non-Hermitian time-dependent invariant for the latter system. Exploiting the fact that this invariant is pseudo-Hermitian, we construct a corresponding Dyson map as the adjoint action from a non-Hermitian to a Hermitian invariant, thus obtaining solutions to the time-dependent Dyson and time-dependent quasi-Hermiticity equation together with solutions to the corresponding time-dependent Schr\"odinger equation.

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Andreas Fring, Rebecca Tenney. 2021-05-04. Exactly solvable time-dependent non-Hermitian quantum systems from point transformations. https://doi.org/10.1016/j.physleta.2021.127548

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