Sous John, Grant Edward
Department of Physics & Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada.
Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.
Phys Rev Lett. 2018 Mar 16;120(11):110601. doi: 10.1103/PhysRevLett.120.110601.
We argue that the quenched ultracold plasma presents an experimental platform for studying the quantum many-body physics of disordered systems in the long-time and finite energy-density limits. We consider an experiment that quenches a plasma of nitric oxide to an ultracold system of Rydberg molecules, ions, and electrons that exhibits a long-lived state of arrested relaxation. The qualitative features of this state fail to conform with classical models. Here, we develop a microscopic quantum description for the arrested phase based on an effective many-body spin Hamiltonian that includes both dipole-dipole and van der Waals interactions. This effective model appears to offer a way to envision the essential quantum disordered nonequilibrium physics of this system.
我们认为，猝灭超冷等离子体为研究无序系统在长时间和有限能量密度极限下的量子多体物理提供了一个实验平台。我们考虑这样一个实验：将一氧化氮等离子体猝灭到一个由里德堡分子、离子和电子组成的超冷系统，该系统呈现出一种长寿命的弛豫停滞状态。这种状态的定性特征不符合经典模型。在此，我们基于一个有效的多体自旋哈密顿量，为停滞相开发了一种微观量子描述，该哈密顿量包括偶极 - 偶极相互作用和范德华相互作用。这个有效模型似乎为设想该系统基本的量子无序非平衡物理提供了一种方法。
