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Spectral Singularities of a General Point Interaction
Complex potential spectral singularity point interaction PT -symmetry
2011/8/31
Abstract: We study the problem of locating spectral singularities of a general complex point interaction with a support at a single point. We also determine the bound states, examine the special cases...
Spectral singularities such as exceptional points invoke specific physical effects. The present
paper focuses upon the time dependent solutions of the Schr¨odinger equation. In a simple model it is d...