Exceptional point in a coupled Swanson system
arXiv:2110.05865 · doi:10.1209/0295-5075/ac5dd9
Abstract
We propose an interacting nonhermitian model described by a two-mode quadratic Hamiltonian along with an interaction term to locate and analyze the presence of an exceptional point in the system. Each mode is guided by a Swanson-like quadratic Hamiltonian and a suitable choice is made for the interaction term. The parity-time symmetric transformation is adopted in the standard way relevant for a coupled system.
11 pages, 2 figures; Accepted in Europhysics Letters