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Bose-Einstein condensates of microwave-shielded polar molecules
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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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Cited by 4 Pith papers
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Supersolid Phases in Ultracold Gases of Microwave Shielded Polar Molecules
Elliptically polarized microwaves induce anisotropic dipolar interactions in microwave-shielded NaCs molecules, and path-integral Monte Carlo simulations show a supersolid phase appears at experimentally accessible pa...
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Symmetry and Self-Bound Droplets in Dipolar Molecular Gases
A D3 symmetry tiles the two-parameter interaction plane of microwave-dressed molecules, and this classification yields the phase diagram and scaling laws for self-bound molecular droplets.
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Two- and many-body physics of ultracold molecules dressed by dual microwave fields
Dual-microwave shielding of polar molecules is shown to have an optimal regime where dipolar attraction cancels and the good-to-bad collision ratio peaks, enabling an effective potential that predicts correlated gas states.
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Universality in the microwave shielding of ultracold polar molecules
Microwave shielding of ultracold polar molecules is nearly universal: collision rates, scattering lengths, and bound states match across species when scaled by the dipole length and energy.
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