Universal Scattering of Ultracold Atoms and Molecules in Optical Potentials
TLDR
In this article, the authors calculate the universal inelastic rate coefficients for a large group of ultracold polar molecules in their lower ro-vibrational states colliding with one of their constituent atoms.Abstract:
Universal collisions describe the reaction of molecules and atoms as dominated by long-range interparticle interactions. Here, we calculate the universal inelastic rate coefficients for a large group of ultracold polar molecules in their lower ro-vibrational states colliding with one of their constituent atoms. The rate coefficients are solely determined by values of the dispersion coefficient and reduced mass of the collisional system. We use the ab initio coupled-cluster linear response method to compute dynamic molecular polarizabilities and obtain the dispersion coefficients for some of the collisional partners and use values from the literature for others. Our polarizability calculations agree well with available experimental measurements. Comparison of our inelastic rate coefficients with results of numerically exact quantum-mechanical calculations leads us to conjecture that collisions with heavier atoms can be expected to be more universal.read more
Citations
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Ultracold Gas of Bosonic ^{23}Na^{39}K Ground-State Molecules.
Kai K. Voges,Philipp Gersema,Mara Meyer zum Alten Borgloh,Torben A. Schulze,Torsten Hartmann,Alessandro Zenesini,Alessandro Zenesini,Silke Ospelkaus +7 more
TL;DR: In this article, the authors report the creation of ultracold bosonic dipolar molecules in their absolute rovibrational ground state using an adiabatic Raman passage.
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Non-adiabatic quantum interference in the ultracold Li + LiNa → Li2 + Na reaction.
Brian K. Kendrick,Hui Li,Ming Li,Svetlana Kotochigova,James F. E. Croft,Naduvalath Balakrishnan +5 more
TL;DR: In this paper, the non-adiabatic quantum dynamics of the reactive scattering between ultracold alkali-metal LiNa molecules and Li atoms is studied. But the authors focus on the long-range interactions between the two electronic states.
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Unified model of ultracold molecular collisions
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Detection of Long-Lived Complexes in Ultracold Atom-Molecule Collisions
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Ultracold chemistry with alkali-metal-rare-earth molecules
Constantinos Makrides,Jisha Hazra,G. B. Pradhan,Brian K. Kendrick,Thom '{a}s Gonz '{a}lez-Lezana,Balakrishnan Naduvalath,Alexander Petrov,Svetlana Kotochigova +7 more
TL;DR: In this paper, a first principles study of the dynamics of the Li$_2$Yb system was presented at cold and ultracold temperatures, and the results indicated that a simplified model based on the long-range potential is able to yield reliable values of the total reaction rate coefficient in the ultra-cold limit but a more rigorous approach based on statistical quantum or quantum close coupling methods is desirable when product rovibrational distribution is required.
References
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