论文标题
在驱动的多体量子系统中浴诱导的zeno定位
Bath-induced Zeno localization in driven many-body quantum systems
论文作者
论文摘要
我们研究了受外部驱动器的量子相互作用的自旋系统，并与空间局部振动模式的热浴耦合，作为动态核极化模型。我们表明，即使系统的多体征态体是千古的，与浴室的相当强的耦合也可能有效地将旋转定位，这是由于多体量子Zeno效应，这是由电子顺磁共振谱的孔燃烧形状所表现出的。我们的结果提供了对在4-5开尔文的实验观察到的热混合制度的分解的解释。
We study a quantum interacting spin system subject to an external drive and coupled to a thermal bath of spatially localized vibrational modes, serving as a model of Dynamic Nuclear Polarization. We show that even when the many-body eigenstates of the system are ergodic, a sufficiently strong coupling to the bath may effectively localize the spins due to many-body quantum Zeno effect, as manifested by the hole-burning shape of the electron paramagnetic resonance spectrum. Our results provide an explanation of the breakdown of the thermal mixing regime experimentally observed above 4 - 5 Kelvin.
