Emergent Inflation of the Efimov Spectrum under Three-Body Spin-Exchange Interactions

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Samenvatting

We resolve the unexpected and long-standing disagreement between experiment and theory in the Efimovian three-body spectrum of Li7, commonly referred to as the lithium few-body puzzle. Our results show that the discrepancy arises out of the presence of strong nonuniversal 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.

Originele taal-2Engels
Artikelnummer133402
Aantal pagina's6
TijdschriftPhysical Review Letters
Volume132
Nummer van het tijdschrift13
DOI's
StatusGepubliceerd - 29 mrt. 2024

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Publisher Copyright:
© 2024 American Physical Society.

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