Emergent Inflation of the Efimov Spectrum under Three-Body Spin-Exchange Interactions.
Phys Rev Lett
; 132(13): 133402, 2024 Mar 29.
Article
em En
| MEDLINE
| ID: mdl-38613304
ABSTRACT
We resolve the unexpected and long-standing disagreement between experiment and theory in the Efimovian three-body spectrum of ^{7}Li, 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.
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MEDLINE
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En
Ano de publicação:
2024
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Article