Two- and many-body physics of ultracold molecules dressed by dual microwave fields
Abstract
We investigate the two- and many-body physics of the ultracold polar molecules dressed by dual microwaves with distinct polarizations. Using Floquet theory and multichannel scattering calculations, we identify a regime with the largest elastic-to-inelastic scattering ratio which is favorable for performing evaporative cooling. Furthermore, we derive and, subsequently, validate an effective interaction potential that accurately captures the dynamics of microwave-shielded polar molecules (MSPMs). We also explore the ground-state properties of the ultracold gases of MSPMs by computing physical quantities such as gas density, condensate fraction, momentum distribution, and second-order correlation. It is shown that the system supports a weakly correlated expanding gas state and a strongly correlated self-bound gas state. Since the dual-microwave scheme introduces addition control knob and is essential for creating ultracold Bose gases of polar molecules, our work pave the way for studying two- and many-body physics of the ultracold polar molecules dressed by dual microwaves.
Keywords
Cite
@article{arxiv.2501.05210,
title = {Two- and many-body physics of ultracold molecules dressed by dual microwave fields},
author = {Fulin Deng and Xinyuan Hu and Wei-Jian Jin and Su Yi and Tao Shi},
journal= {arXiv preprint arXiv:2501.05210},
year = {2025}
}