Emergent inflation of the Efimov spectrum under three-body spin-exchange interactions
Abstract
We resolve the unexpected and long-standing disagreement between experiment and theory in the Efimovian three-body spectrum of Li-7, commonly referred to as the lithium few-body puzzle. Our results show that the discrepancy arises out of the presence of strong non-universal three-body spin-exchange interactions, which enact an effective inflation of the universal Efimov spectrum. This conclusion is obtained from a thorough numerical solution of the quantum mechanical three-body problem, including precise interatomic interactions and all spin degrees of freedom for three alkali-metal atoms. Our results show excellent agreement with the experimental data regarding both the Efimov spectrum and the absolute rate constants of three-body recombination, and in addition reveal a general product propensity for such triatomic reactions in the Paschen-Back regime, stemming from Wigner's spin conservation rule.
Keywords
Cite
@article{arxiv.2309.13128,
title = {Emergent inflation of the Efimov spectrum under three-body spin-exchange interactions},
author = {J. van de Kraats and D. J. M. Ahmed-Braun and J. -L. Li and S. J. J. M. F. Kokkelmans},
journal= {arXiv preprint arXiv:2309.13128},
year = {2024}
}
Comments
6+5 pages, 3+3 figures