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

Fring, A. ORCID: 0000-0002-7896-7161 and Tenney, R. (2021). Exactly solvable time-dependent non-Hermitian quantum systems from point transformations. Physics Letters A, 410, 127548. doi: 10.1016/j.physleta.2021.127548

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 Schrödinger equation.

Publication Type: Article
Additional Information: © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Publisher Keywords: Non-Hermitian quantum systems, Point transformations, PT-symmetric systems, Lewis-Riesenfeld invariants, Swanson model
Subjects: Q Science > QA Mathematics
Departments: School of Mathematics, Computer Science & Engineering > Mathematics
Date available in CRO: 06 Jul 2021 10:33
Date deposited: 6 July 2021
Date of acceptance: 25 June 2021
Date of first online publication: 30 June 2021
URI: https://openaccess.city.ac.uk/id/eprint/26355
[img] Text - Accepted Version
This document is not freely accessible until 30 June 2022 due to copyright restrictions.
Available under License Creative Commons Attribution Non-commercial No Derivatives.

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