Time behaviour near to spectral singularities

Details Time behaviour near to spectral singularities Time behaviour near to spectral singularities

2010-09-29

arxiv.org/abs/1009.5780v1

Physics

Quantum Physics

5 pages, 3 figures to appear in EPJ D

Scientific paper

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 demonstrated that - depending on initial conditions - within close proximity of exceptional points the time behaviour of the wave function displays characteristic features such as very fast decay or the opposite, i.e. very long life time. At the exceptional point the wave function typically has a linear term in time besides the usual exponential behaviour.

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