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arXiv · 2210.13253

Effective potential and superfluidity of microwave-dressed polar molecules

Fulin Deng·Xing-Yan Chen·Xin-Yu Luo·Wenxian Zhang·Su Yi·Tao Shi
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Abstract

For microwave-dressed polar molecules, we analytically derive an intermolecular potential composed of an anisotropic van der Waals shielding core and a long-range dipolar interaction. We validate this effective potential by comparing its scattering properties with those calculated using the full multi-channel interaction potential. It is shown that scattering resonances can be induced by a sufficiently strong microwave field. We also show the power of the effective potential in the study of many-body physics by calculating the critical temperature of the Bardeen-Cooper-Schrieffer pairing in the microwave-dressed NaK gas. It turns out that the effective potential is well-behaved and extremely suitable for studying the many-body physics of the molecular gases. Our results pave the way for the studies of the many-body physics of the ultracold microwave-dressed molecular gases.

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Fulin Deng, Xing-Yan Chen, Xin-Yu Luo, Wenxian Zhang, Su Yi, Tao Shi. 2022-10-24. Effective potential and superfluidity of microwave-dressed polar molecules. https://doi.org/10.1103/physrevlett.130.183001

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