Abstract
We study the medium-time behavior of the survival probability in the frame of the N-level Friedrichs model. The time evolution of an arbitrary unstable initial state is determined. We show that the survival probability may oscillate significantly during the so-called exponential era. This result explains qualitatively the experimental observations of the NaI decay. The Gamow states for N-level Friedrichs model are constructed. The time evolution in terms of the complex spectral representation including the Gamow states is discussed.
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Antoniou, I., Karpov, E., Pronko, G. et al. Oscillating Decay of an Unstable System. International Journal of Theoretical Physics 42, 2403–2421 (2003). https://doi.org/10.1023/B:IJTP.0000005966.53444.b8
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DOI: https://doi.org/10.1023/B:IJTP.0000005966.53444.b8