微波屏蔽偶极分子间相互作用的非加和性
Non-Additivity of Microwave-Shielded Interactions between Dipolar Molecules
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中文总结 AI 辅助
该研究检验微波屏蔽偶极分子间相互作用的对近似有效性，发现平面内多体效应使吸引势阱加深、排斥势垒位移，三维面外相互作用削弱非加和性，自束缚团簇的吸引势阱需用多体势能描述。
中文摘要 AI 辅助
微波屏蔽极性分子间有效相互作用的理论模型通常依赖于对加和性的假设。本研究通过计算3个和4个分子构型的精确多体势能，检验了这种对近似的有效性。我们证明，在圆偏振微波场平面内的分子构型中，该近似失效；在这些平面几何结构中，多体效应显著增强了吸引势阱的深度，并改变了排斥势垒的位置。尽管三维排列中的面外相互作用会削弱这种非加和性，但微波屏蔽偶极子间的有效相互作用并非两两相互作用的简单求和。特别地，对于自束缚团簇至关重要的吸引势阱，只能通过完整的多体势能来描述。
英文摘要
Theoretical models of the effective interactions between microwave-shielded polar molecules typically rely on the assumption of pairwise additivity. In this work, we test the validity of this pairwise approximation by evaluating the exact many-body potential energy for configurations of three and four molecules. We demonstrate that this approximation fails for molecule configurations in the plane of the circularly polarized microwave field. In these planar geometries, many-body effects significantly increase the depth of the attractive potential well and shift the position of the repulsive barrier. Although out-of-plane interactions in three-dimensional arrangements weaken this non-additivity, the effective interactions between microwave-shielded dipoles are not a simple sum of pair interactions. In particular, their attractive well, crucial for self-bound clusters, can only be described by the full many-body potential energy.
发表机构
- Institute for Theoretical Physics, Johannes Kepler University Linz（林茨约翰·开普勒大学理论物理研究所）
- Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien（维也纳量子科学与技术中心，原子研究所，维也纳工业大学）
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