标题： 偶极冷基态玻色分子的碰撞 显示英文标题

标题： Dipolar Collisions of Ultracold Ground-state Bosonic Molecules

摘要： 极性超冷分子之间的偶极碰撞是一个重要课题，从基础观点来看本身具有重要意义，并且对于成功探索具有强而长程偶极相互作用的多体物理也至关重要。 在这里，我们报告了在电场中具有诱导电偶极矩高达0.7$\;$D的超冷基态钠-铷分子之间的碰撞研究。我们观察到由于日益增强的各向异性偶极相互作用引起的不同部分波之间的耦合导致的损失逐步增强。 通过改变样品的温度，我们发现与假设复合形成为主要损失过程的理论损失率有良好的一致性。 我们的结果为在强偶极相互作用存在的情况下理解复杂分子碰撞提供了新的见解，并且也展示了通过电场修改分子相互作用的多功能性。 显示英文摘要

摘要： The dipolar collision between ultracold polar molecules is an important topic both by its own right from the fundamental point of view and for the successful exploration of many-body physics with strong and long-range dipolar interactions. Here, we report the investigation of collisions between ultracold ground-state sodium-rubidium molecules in electric fields with induced electric dipole moments as large as 0.7$\;$D. We observe a step-wise enhancement of losses due to the coupling between different partial waves induced by the increasingly stronger anisotropic dipolar interactions. Varying the temperature of our sample, we find good agreement with theoretical loss rates assuming complex formation as the main loss process. Our results shed new light on the understanding of complex molecular collisions in the presence of strong dipolar interactions and also demonstrate the versatility of modifying molecular interactions with electric fields.