论文标题
在激发态量子过渡的情况下，量子淬灭动力学的准经典方法
Quasiclassical approach to quantum quench dynamics in the presence of an excited-state quantum phase transition
论文作者
论文摘要
使用准经典技术研究了突然的，高度非绝热的量子系统的动力学。最近的工作表明，使用精确的量子机械方法表明，量子淬灭后的平衡在存在激发态量子相变的情况下表现出特定的特征。在本文中，我们证明了这些特征可以从相位空间中Wigner函数的经典演化中理解。
The dynamics of a quantum system following a sudden, highly non-adiabatic change of its control parameter (quantum quench) is studied with quasiclassical techniques. Recent works have shown, using exact quantum mechanical approach, that equilibration after quantum quench exhibits specific features in the presence of excited-state quantum phase transitions. In this paper, we demonstrate that these features can be understood from the classical evolution of the Wigner function in phase space.
