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

Ghasemi, F ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1038/s41598-019-51729-1
  3. Publisher: Nature Publishing Group , 2019
  4. Abstract:
  5. 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 h˜ changes continuously in a given domain. © 2019, The Author(s)
  6. Keywords:
  7. Article ; Environmental parameters
  8. Source: Scientific Reports ; Volume 9, Issue 1 , 2019 ; 20452322 (ISSN)
  9. URL: https://www.nature.com/articles/s41598-019-51729-1