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Revisiting quantum Zeno effect and anti-Zeno effect: Universality vs non-universality
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Universality vs non-universality on the quantum Zeno effect and the anti-Zeno effect is discussed. It is well-known that the Zeno effect is a result of the branch point effect based on the constraint that the energy spectrum is bounded from below. On the other hand, we show that the anti-Zeno effect arises from the interference of multiple complex poles in the lower half energy plane on a larger time scale compared with the Zeno time. Since the production of extra complex poles depends on the characteristics of the interaction Hamiltonian, we emphasize that the anti-Zeno effect is model-dependent and non-universal, while the Zeno effect is a universal phenomenon independent of the form of the interaction.
Title: Revisiting quantum Zeno effect and anti-Zeno effect: Universality vs non-universality
Description:
Universality vs non-universality on the quantum Zeno effect and the anti-Zeno effect is discussed.
It is well-known that the Zeno effect is a result of the branch point effect based on the constraint that the energy spectrum is bounded from below.
On the other hand, we show that the anti-Zeno effect arises from the interference of multiple complex poles in the lower half energy plane on a larger time scale compared with the Zeno time.
Since the production of extra complex poles depends on the characteristics of the interaction Hamiltonian, we emphasize that the anti-Zeno effect is model-dependent and non-universal, while the Zeno effect is a universal phenomenon independent of the form of the interaction.
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