Bose-Einstein condensates of microwave-shielded polar molecules
Abstract
We investigate the ground-state properties of the ultracold gases of bosonic microwave-shielded polar molecules. To account for the large shielding core of the inter-molecular potential, we adopt a variational ansatz incorporating the Jastrow correlation factor. We show that the system is always stable and supports a self-bound gas phase and an expanding gas phase. We also calculate the condensate fraction which is significantly reduced when the size of the shielding core of the two-body potential becomes comparable to the inter-molecular distance. Our studies distinguish the molecular condensates from the atomic ones and invalidate the application of the Gross-Pitaevskii equation to the microwave-shielded molecular gases. Our work paves the way for studying the Bose-Einstein condensations of ultracold gases of microwave-shielded polar molecules.
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Cite
@article{arxiv.2406.06412,
title = {Bose-Einstein condensates of microwave-shielded polar molecules},
author = {Wei-Jian Jin and Fulin Deng and Su Yi and Tao Shi},
journal= {arXiv preprint arXiv:2406.06412},
year = {2024}
}