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Fermi's "Golden Rule" and Non-Exponential Decay

C. Dullemond
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Abstract

A study is made of the behavior of unstable states in simple models which nevertheless are realistic representations of situations occurring in nature. It is demonstrated that a non-exponential decay pattern will ultimately dominate decay due to a lower limit to the energy. The survival rate approaches zero faster than the inverse square of the time when the time goes to infinity.

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C. Dullemond. 2002-02-19. Fermi's "Golden Rule" and Non-Exponential Decay. https://arxiv.org/abs/quant-ph/0202105

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