Exactness of the Born approximation, broadband unidirectional invisibility, and implicit

regularization of point scatterers in 2D

Ali Mostafazadeh (Koç University, Istanbul)work done in collaboration with

Farhang Loran (Isfahan Univ. of Tech., Iran)

Supported by Turkish Academy of Sciences

Outline:- Dynamical formulation of time-independent

scattering theory in 1D - Generalization to 2D- Applications:

- Broadband omnidirectional invisibility- α-equivalent potentials- Exactness of the first Born approximation- Broadband unidirectional invisibility - Implicit regularization of point scatterers

- Concluding remarks