热力学系统中量子芝诺动力学的标度
Scaling of quantum Zeno dynamics in thermodynamic systems
摘要：
研究了耦合到中心量子比特的一维横场伊辛模型和Lipkin-Meshkov-Glick（LMG）模型中的量子芝诺效应（QZE）.我们的结果表明，为了在伊辛模型中观察到QZE，投影测量的频率应该与系统尺寸的频率具有可比性。在LMG模型的对称性破缺阶段，同样的准则也成立，而在模型的极化阶段，QZE可以很容易地观察到。
英文摘要：
We study the quantum Zeno effect (QZE) in two many-body systems, namely the one-dimensional transverse-field Ising model and the Lipkin-Meshkov-Glick (LMG) model, coupled to a central qubit. Our result shows that in order to observe QZE in the Ising model, the frequency of the projective measurement should be of comparable order to that of the system sizes. The same criterion also holds in the symmetry broken phase of the LMG model while in the model's polarized phase, the QZE can be easily observed.
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