Conditional observability versus self-duality in a schematic model

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/164775In a simple PT-symmetric model we demonstrate that and how the violation of a reflection symmetry $E_j=-E_{N+1-j}$ of the spectrum (called "self-duality" by Dunne and Shifman) is connected with the loss of the simplicity of the shape of the boundary of the domain D of parameters where the Hamiltonian H is quasi-Hermitian, i.e., where all the bound-state energies are real.11 pages, 2 figuresQuantum PhysicsConditional observability versus self-duality in a schematic modeltext