Kompakt destek kompleksi potansiyelleri için spektral singülerlik pertürbatif analizi

Spectral singularities are energies at which the refection and transmission coefficientsof a complex scattering potential diverge. Therefore they can be associated with a type ofresonance states that have real energies and zero width. After theoretically determining thelocation of spectral singularities, experimental observations can conrm this concept as anew type of resonance effect and give approval to its possible application in optics and laserphysics.