论文标题
Quench后无序的bose气体中的Kosterlitz的动态出现
Dynamical emergence of a Kosterlitz-Thouless transition in a disordered Bose gas following a quench
论文作者
论文摘要
我们研究了疾病潜在淬火后二维bose气体的动力学演化。根据初始条件，系统将演变为热或超流体状态。使用广泛的准表演数值模拟，我们表明这两个阶段是通过kosterlitz-thou thou thou thou thou thou thou thou thou thou thou thou thou thou thou thou swar。在超流相期间，热化时间显示更长，但是在过渡时没有观察到临界减速。长期相图通过简单的理论模型很好地复制。 Kosterlitz的自发出现 - 淬灭之后的无尽转变是一种通用现象，在非平衡量子气和非线性的经典波系统的背景下应出现。
We study the dynamical evolution of a two-dimensional Bose gas after a disorder potential quench. Depending on the initial conditions, the system evolves either to a thermal or a superfluid state. Using extensive quasi-exact numerical simulations, we show that the two phases are separated by a Kosterlitz-Thouless transition. The thermalization time is shown to be longer in the superfluid phase, but no critical slowing down is observed at the transition. The long-time phase diagram is well reproduced by a simple theoretical model. The spontaneous emergence of Kosterlitz-Thouless transitions following a quench is a generic phenomenon that should arise both in the context of non-equilibrium quantum gases and nonlinear, classical wave systems.
