Resonances in Non-universal Dipolar Collisions

@article{Karman2022ResonancesIN,
  title={Resonances in Non-universal Dipolar Collisions},
  author={Tijs Karman},
  journal={The Journal of Physical Chemistry. a},
  year={2022},
  volume={127},
  pages={2194 - 2211}
}
  • T. Karman
  • Published 6 December 2022
  • Physics
  • The Journal of Physical Chemistry. a
Scattering resonances due to the dipole–dipole interaction between ultracold molecules, induced by static or microwave fields, are studied theoretically. We develop a method for coupled-channel calculations that can efficiently impose many short-range boundary conditions, defined by a short-range phase shift and loss probability as in quantum defect theory. We study how resonances appear as the short-range loss probability is lowered below the universal unit probability. This may become… 
[PDF] Semantic Reader

References

SHOWING 1-10 OF 66 REFERENCES

Quasi-universal dipolar scattering in cold and ultracold gases

We investigate the scattering cross section of aligned dipolar molecules in low-temperature gases. Over a wide range of collision energies relevant to contemporary experiments, the cross section…

Resonant Dipolar Collisions of Ultracold Molecules Induced by Microwave Dressing.

The resonant microwave-induced collisions found here enable controlled, strong interactions between molecules, of immediate use for experiments in optical lattices.

Scattering of ultracold molecules in the highly resonant regime

Compared to purely atomic collisions, ultracold molecular collisions potentially support a much larger number of Fano-Feshbach resonances due to the enormous number of rovibrational states available.…

Microwave Shielding of Ultracold Polar Molecules.

We use microwaves to engineer repulsive long-range interactions between ultracold polar molecules. The resulting shielding suppresses various loss mechanisms and provides large elastic cross…

Simple quantum model of ultracold polar molecule collisions

We present a unified formalism for describing chemical reaction rates of trapped, ultracold molecules. This formalism reduces the scattering to its essential features, namely, a propagation of the…

Angular-momentum-insensitive quantum-defect theory for diatomic systems

We show that the highly excited rovibrational spectra of a diatomic molecule and the closely related slow atomic collision processes contain more systematics and require less parameters to…

Statistical Aspects of Ultracold Resonant Scattering

Resonances have always played a key role in scattering experiments across many areas of physics, serving to nail down our understanding of the interaction between the collision partners. They play an…

Tuning ultracold collisions of excited rotational dipolar molecules

We investigate the ultracold collisions of rotationally excited dipolar molecules in free-space, taking the hetero-nuclear bi-alkali molecule of KRb as an example. We show that we can sharply tune…

Strongly correlated 2D quantum phases with cold polar molecules: controlling the shape of the interaction potential.

We discuss techniques to tune and shape the long-range part of the interaction potentials in quantum gases of bosonic polar molecules by dressing rotational excitations with static and microwave…

Resonant collisional shielding of reactive molecules using electric fields

Extreme tunability of ultracold chemical reaction rates is demonstrated by inducing resonant dipolar interactions by means of an external electric field and it is shown that strong external electric fields near dipolar-mediated resonances can suppress reactive losses in ultracolds quasi-2D KRb gas.
...