论文标题
激发状态量子相变
Excited-state quantum phase transitions
论文作者
论文摘要
我们回顾了激发态量子相变（ESQPTS）对具有有限数量的集体自由度的多体系统相互作用的影响。我们将能量本征谱的典型ESQPT签名相对于基本的经典动态，并概述了它们发生的各种量子系统。我们描述了ESQPTS的热力学和动态后果，例如微型人类热力学，量子淬灭动力学以及对几乎绝热或周期性驾驶的响应。我们暗示了在定期晶格和谐振隧道系统中对ESQPT概念的一些概括。
We review the effects of excited-state quantum phase transitions (ESQPTs) in interacting many-body systems with finite numbers of collective degrees of freedom. We classify typical ESQPT signatures in the spectra of energy eigenstates with respect to the underlying classical dynamics and outline a variety of quantum systems in which they occur. We describe thermodynamic and dynamic consequences of ESQPTs, like those in microcanonical thermodynamics, quantum quench dynamics, and in the response to nearly adiabatic or periodic driving. We hint at some generalizations of the ESQPT concept in periodic lattices and in resonant tunneling systems.
