City Research Online

Abstract

We propose and explore a scheme that leads to an infinite series of time-dependent Dyson maps which associate different Hermitian Hamiltonians to a uniquely specified time-dependent non-Hermitian Hamiltonian. We identify the underlying symmetries responsible for this feature respected by various Lewis-Riesenfeld invariants. The latter are used to facilitate the explicit construction of the Dyson maps and metric operators. As a concrete example for which the scheme is worked out in detail we present a two-dimensional system of oscillators that are coupled to each other in a non-Hermitian PT-symmetrical fashion.

Publication Type:	Article
Additional Information:	This is the Accepted Manuscript version of an article accepted for publication in Journal of Physics A: Mathematical and Theoretical.  IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it.  This Accepted Manuscript is published under a CC BY-NC-ND 3.0 licence. The Version of Record is available online at https://doi.org/10.1088/1751-8121/ac31a0
Subjects:	Q Science > QA Mathematics Q Science > QC Physics
Departments:	School of Science & Technology > Mathematics
SWORD Depositor:	Symplectic Administrator

Export

Downloads