【时  间】2025年8月22日（星期五）14:00

【地  点】广东会院526报告厅

【主  持】刘玉龙副研究员  广东会计算研究部 

【题  目】Many-body Quantum Phases in Micro-wave Shielded Polar Molecules

【摘  要】We show that the effective interaction potential between microwave-shielded polar molecules consists of an anisotropic van der Waals-like shielding core and a modified dipolar interaction. This effective potential is validated by comparing its scattering cross-sections with those calculated using intermolecular potential involving all interaction channels. It is shown that a scattering resonance can be induced under microwave fields and a field-link tetramer bound state emerges. With the effective potential, we further study the Bardeen-Cooper-Schrieffer pairing, Bose-Einstein condensations, and supersolid phases in microwave-shielded molecular gas. We show the fermionic superfluid critical temperature drastically enhanced near the resonance, a formation of self-bound droplets with reduced condensate fraction resembling a magnified Helium 4, and a formation of supersolidity controlled by the microwave elliptical angle.

【报告人简介】石弢，中国科学院理论物理研究所研究员，博士生导师。主要从事广东会光学和冷原子分子物理的研究。2011年在中科院理论物理所取得博士学位。2011年至2017年在马普广东会光学研究所从事博士后研究。2017年回国加入中科院理论物理所。