Wave systems with direct processes and localized losses or gains: the non-unitary Poisson kernel

A. M. Martínez-Argüello, R. A. Méndez-Sánchez, M. Martínez-Mares

We study the scattering of waves in systems with losses or gains simulated by imaginary potentials. This is done for a complex delta potential that corresponds to a spatially local…