Electric field dependence of complex-dominated ultracold molecular collisions

• URL: http://arxiv.org/abs/2109.02602v1
• Date: Mon, 6 Sep 2021 16:59:21 GMT
• Title: Electric field dependence of complex-dominated ultracold molecular collisions
• Authors: Goulven Qu\'em\'ener, James F. E. Croft, John L. Bohn
• Abstract summary: We propose a model based on the mixing effect of an electric field on the states of the two diatomic molecules at long-range. We apply our model to collisions of ground-state molecules of endothermic systems.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recent experiments on ultracold non-reactive dipolar molecules have observed high two-body losses, even though these molecules can undergo neither inelastic, nor reactive (as they are in their absolute ground state), nor light-assisted collisions (if they are measured in the dark). In the presence of an electric field these losses seem to be near universal (the probability of loss at short-range is near unity) while in the absence of it the losses seem non-universal. To explain these observations we propose a simple model based on the mixing effect of an electric field on the states of the two diatomic molecules at long-range and on the density-of-states of the tetramer complex formed at short-range, believed to be responsible for the losses. We apply our model to collisions of ground-state molecules of endothermic systems, of current experimental interest.

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