Extended Results on Absorbing Boundary Conditions as Limits of Complex Potentials
The research extends prior findings by demonstrating that absorbing boundary conditions (ABCs) for quantum detection can be derived as a limit of complex absorbing potentials (CAPs). Crucially, this new derivation uses a Dirichlet boundary condition at the end of the CAP region, which is considered more physically realistic than previous methods involving Neumann conditions. This confirms that ABCs are achievable in this practical limit.