Coordination Funds

在过去的几年里，偶极气体已经发展成为竞争非常激烈的超冷气体领域中最活跃和最有前途的研究课题之一。如今，高磁性原子的玻色-爱因斯坦凝聚体和简并费米气体通常在实验室中制备。在制备超冷极性分子偶极气体方面也取得了很大的进展。偶极-偶极相互作用导致了令人兴奋的新物理，无论是在最近的实验刚刚开始揭开的少数和多体水平上。DFG和FWF的2247联合研究单位结合了致力于偶极气体的领先研究小组的专业知识，对最近的进展做出了决定性的贡献，促进了德国和奥地利在具有挑战性的偶极量子气体物理领域的竞争力。在即将到来的资助期内，我们计划进一步深化我们的协同效应和合作，并在我们建立的共同平台上建立起来，以解决现代量子物理学前沿的新的有趣问题。特别是，我们计划按照我们的两个主要科学目标结合和协调我们对偶极气体的研究活动：*我们将加深对偶极气体中的两体和少数体碰撞过程的理解，包括基态分子之间的碰撞过程和高度磁性原子的自旋混合物中的碰撞过程。这将使我们能够设计双体和少体碰撞过程，为观察大量新颖的多体场景奠定基础。*我们将从理论和实验上研究偶极气体中的新多体现象。我们将特别强调特别有趣的话题，包括偶极轻子、量子液滴、超固体、偶极格子气体和偶极费米子中的超流。我们将保持并进一步改进我们已建立的合作框架，鼓励进行活跃的讨论，交流专门知识，在我们的小组之间开发新的想法和工具，并在我们的股内建立新的联系和合作。我们将通过我们建立的联合虚拟研究所来组织这些网络活动，该研究所组织了几项倡议，包括通用IT基础设施、访客计划、年度研讨会、学生访问和协调的特别工作组。

In the last years, dipolar gases have developed to one of the most active and promising research topics in the very competitive field of ultracold gases. Bose-Einstein condensates and degenerate Fermi gases of highly magnetic atoms are nowadays routinely prepared in the laboratory. Great progress has been achieved as well in the preparation of dipolar gases made of ultracold polar molecules. Dipole-dipole interactions lead to exciting novel physics both at the few- and many-body level that recent experiments are just starting to unveil. The joint Research Unit FOR 2247 of DFG and FWF, combining the expertise of leading research groups working on dipolar gases, has decisively contributed to recent progress, fostering the competitiveness of Germany and Austria in the challenging field of dipolar quantum gas physics. Within the upcoming funding period, we plan to deepen even further our synergies and collaborations and to build on our established common platform to address novel intriguing questions at the forefront of modern quantum physics. In particular, we plan to combine and coordinate our research activities on dipolar gases along our two main scientific objectives: * We will deepen our understanding of two- and few-body collisional processes in dipolar gases, including collisional processes between ground state molecules and in spin mixtures of highly magnetic atoms. This will allow us to engineer two- and few-body collisional processes preparing the ground for the observation of a wealth of novel manybody scenarios. * We will investigate theoretically and experimentally novel many-body phenomena in dipolar gases. We will put particular emphasis to particularly intriguing topics, including dipolar rotons, quantum droplets, supersolids, dipolar lattice gases, and superfluidity in dipolar fermions. We will maintain and further improve our established collaborative frame, encouraging lively discussions, the interchange of know-how, the development of novel ideas and tools among our groups, and the creation of new links and cooperations within our Unit. We will structure these networking activities by means of our established Joint Virtual Institute, which organizes several initiatives, including a common IT infrastructure, a visitors program, yearly workshops, student visits, and coordinated task forces.