论文标题
偶极超酚的高能量bragg散射测量
High-energy Bragg scattering measurements of a dipolar supersolid
论文作者
论文摘要
我们提出了一项实验和理论研究，对偶极超固体的高能激发光谱。使用BRAGG光谱法，我们研究了系统对高能量探针的散射响应，从而实现了动态结构因子的测量。我们在将接触相互作用从普通的玻色子凝结物调整为超粘膜状态时，通过实验观察到反应的持续减少。然而，观察到的还原比Bogoliubov-de-Gennes理论从理论上预测的一个理论更快。基于直观的半分析模型和实时仿真，我们主要将这种差异归因于均衡相位阶段动力学，尽管不影响系统的全局一致性，但它降低了其响应。
We present an experimental and theoretical study of the high-energy excitation spectra of a dipolar supersolid. Using Bragg spectroscopy, we study the scattering response of the system to a high-energy probe, enabling measurements of the dynamic structure factor. We experimentally observe a continuous reduction of the response when tuning the contact interaction from an ordinary Bose-Einstein condensate to a supersolid state. Yet the observed reduction is faster than the one theoretically predicted by the Bogoliubov-de-Gennes theory. Based on an intuitive semi-analytic model and real-time simulations, we primarily attribute such a discrepancy to the out-of-equilibrium phase dynamics, which although not affecting the system global coherence, reduces its response.
