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arXiv · 2102.04779

Towards photoassociation processes of ultracold rubidium trimers

Jan Schnabel·Tobias Kampschulte·Simon Rupp·Johannes Hecker Denschlag·Andreas Köhn
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Abstract

We theoretically investigate the prospects for photoassociation (PA) of Rb$_3$, in particular at close range. We provide an overview of accessible states and possible transitions. The major focus is placed on the calculation of equilibrium structures, the survey of spin-orbit effects and the investigation of transition dipole moments. Furthermore we discuss Franck-Condon overlaps and special aspects of trimers including the (pseudo) Jahn-Teller effect and the resulting topology of adiabatic potential-energy surfaces. With this we identify concrete and suitable PA transitions to potentially produce long-lived trimer bound states. Calculations are performed using the multireference configuration-interaction method together with a large-core effective core potential and a core-polarization potential with a large uncontracted even-tempered basis set.

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Jan Schnabel, Tobias Kampschulte, Simon Rupp, Johannes Hecker Denschlag, Andreas Köhn. 2021-02-09. Towards photoassociation processes of ultracold rubidium trimers. https://doi.org/10.1103/physreva.103.022820

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