论文标题
一维晶格中的bose-Einstein冷凝物的颗粒间歇发射
Intermittent emission of particles from a Bose-Einstein condensate in a one-dimensional lattice
论文作者
论文摘要
我们研究了从一维晶格中定期进行调制相互作用的玻色网凝结物的颗粒发射。在导致离散模式不稳定性的扰动分析中，我们获得了系统可以发出大粒子射流的主要状态，并发现发射明显间歇性而不是连续。被困颗粒的时间演变表现出类似楼梯的衰减，较大的驱动器会引起更明显的间歇性。我们进一步阐明了刺激过程的动力学，并证明了间歇性代表系统的堆积阶段，而不是实际的悬架。理论框架可能会推广到具有类似配置和耦合的多个站点系统上的探索，并为其他基本非平衡问题提供新的见解。
We investigate particle emission from a Bose-Einstein condensate with periodically modulated interactions in a one-dimensional lattice. Within perturbative analysis, which leads to instabilities for discrete modes, we obtain the main regimes where the system can emit a large particle jet, and find that the emission is distinctly intermittent rather than continuous. The time evolution of the trapped particles exhibits a stair-like decay, and a larger drive induces a more significant intermittency. We further shed light on the dynamics of the stimulating process, and demonstrate that instead of a real suspension, the intermittency represents a build-up stage of the system. The theoretical framework might be generalized to the explorations on multiple-site systems with analogous configurations and couplings, and offer new insights into other fundamental nonequilibrium problems.
