论文标题
平均场相互作用量子踢转子的动力学
Dynamics of the mean-field interacting quantum kicked rotor
论文作者
论文摘要
我们研究了由大体外水平的相互作用的多体原子踢转子的动力学，该动力学受大比塔维斯基方程的控制。我们表明，动力学定位被互动破坏，并由次延伸行为取代。与先前从简化版本的GROSS-PITAEVSKII方程中获得的结果相反，副指数似乎并不是通用的。通过研究平均场波函数的阶段，我们提出了一个新的近似值，该近似正确地描述了接近次扩散开始的实验相关时间的动力学，同时保留了以前近似值的计算成本降低。
We study the dynamics of the many-body atomic kicked rotor with interactions at the mean-field level, governed by the Gross-Pitaevskii equation. We show that dynamical localization is destroyed by the interaction, and replaced by a subdiffusive behavior. In contrast to results previously obtained from a simplified version of the Gross-Pitaevskii equation, the subdiffusive exponent does not appear to be universal. By studying the phase of the mean-field wave function, we propose a new approximation that describes correctly the dynamics at experimentally relevant times close to the start of subdiffusion, while preserving the reduced computational cost of the former approximation.
