论文标题
在具有远距离相互作用和线性外部电势的量子气中多体定位
Many-body localization in a quantum gas with long-range interactions and linear external potential
论文作者
论文摘要
我们在一维量子晶格系统中研究了理论上的局部和混乱多体状态之间的过渡，并在粒子和线性外部电势之间具有远距离耦合。就表征本地化的既定标准而言，我们为具有外部线性倾斜和相互作用强度的多种类型的晶格系统构建有效的相图。通过精确的对角和时间依赖性变分原理方法，我们分析了淬火后系统动力学。我们的结果表明，在包含远距离相互作用的情况下，没有任何人工混乱来源的鲜明定位仍然稳定。
We study theoretically transitions between the localized and chaotic many-body regimes in one-dimensional quantum lattice systems with long-range couplings between particles and linear external potential. In terms of established criteria characterizing localization, we construct effective phase diagrams for several types of lattice systems with variable amplitude of the external linear tilt and interaction strength. By means of exact diagonalization and time-dependent variational principle numerical approaches we analyze system dynamics after quenches. Our results reveal that the Stark localization without any artificial source of disorder remains stable upon inclusion of long-range interactions.
