Confinement-induced field-linked states of ultracold polar molecules
Sep 12, 2024e-Print:
- 2409.08431 [physics.atom-ph]
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Abstract: (arXiv)
We predict the existence of stable bound states between pairs of ultracold diatomic molecules with the aid of a static electric field and 1D harmonic confinement. We focus on collisions of NaK-NaK identical fermions, for which we find that currently achievable experimental parameters allow the observation of these confinement-induced field-linked bound states as scattering resonances. The bound state is highly stable with lifetimes estimated to be tens of seconds long. With the diatomic molecules bound at distances a fraction of the dipolar length scale, these complexes allow for explorations of polyatomic chemistry and Fermi gas superfluid pairing.Note:
- The authors have independently noted limitations of the chosen basis set in describing intermediate-range collisional physics. The constructed adiabatic curves are, therefore, inaccurate at distances below the harmonic oscillator length, so the predicted boundstates are merely numerical features. The authors no longer support the claim that these boundstate resonances should be observed
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