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>A new approach to study the Zeno effect for a macroscopic quantum system under frequent interactions with a harmonic environment
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A new approach to study the Zeno effect for a macroscopic quantum system under frequent interactions with a harmonic environment
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 changes continuously in a given domain.
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机译:利用微扰理论研究了两级宏观量子系统在与谐波环境相互作用下的量子芝诺和反芝诺行为。系统与环境之间的交互作用是逐步进行的。在第N个交互步骤之后,通过另一种计算方法,得出了宏系统在其初始状态下存活的概率的新表达式。结果表明,在我们的方法中可以发现芝诺和反芝诺行为之间的多重过渡。我们已经表明,除了像欧姆性这样的环境参数外,系统的宏观特征还对衰减率Γ(τ)有显着影响。此外,我们已经研究了衰减率Γ(τ)作为系统宏观参数的变化方式 h mi> 〜 mo> mover> math>不断变化在给定的域中。
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