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A new approach to study the Zeno effect for a macroscopic quantum system under frequent interactions with a harmonic environment.

ABSTRACT: Quantum Zeno and anti-Zeno behaviors of a two-level macroscopic quantum system in interaction with a harmonic environment are studied using the perturbation theory. The system-environment interactions are applied in a successive and step-by-step way. A new expression for the probability of surviving the macrosystem in its initial state, after the Nth interaction step, is derived through a different method of calculation. It is shown that multiple transitions between Zeno and anti-Zeno behaviors can be found in our approach. We have shown that in addition to the environmental parameters like the Ohmicity, the macroscopic trait of the system also has a notable effect on the decay rate Γ(τ). Moreover, we have investigated how the decay rate Γ(τ) varies as the parameter of the macroscopicity of the system [Formula: see text] changes continuously in a given domain.

SUBMITTER: Ghasemi F

PROVIDER: S-EPMC6813307 | biostudies-other | 2019 Oct

REPOSITORIES: biostudies-other

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A new approach to study the Zeno effect for a macroscopic quantum system under frequent interactions with a harmonic environment.

Ghasemi Fatemeh F Shafiee Afshin A

Scientific reports 20191024 1

Quantum Zeno and anti-Zeno behaviors of a two-level macroscopic quantum system in interaction with a harmonic environment are studied using the perturbation theory. The system-environment interactions are applied in a successive and step-by-step way. A new expression for the probability of surviving the macrosystem in its initial state, after the Nth interaction step, is derived through a different method of calculation. It is shown that multiple transitions between Zeno and anti-Zeno behaviors ...[more]

PMID: 31649291

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