Efimov effect for heteronuclear three-body systems at positive scattering length and finite temperature

Emmons, Samuel B.; Kang, Daekyoung; Acharya, Bijaya; Platter, Lucas

doi:10.1103/PhysRevA.96.032706

Title: Efimov effect for heteronuclear three-body systems at positive scattering length and finite temperature

Journal Article · 08 September 2017 · Physical Review A

DOI: https://doi.org/10.1103/PhysRevA.96.032706 · OSTI ID:1415418

Emmons, Samuel B. ^[1];

^[2]; Acharya, Bijaya ^[1]; Platter, Lucas ^[3]

Univ. of Tennessee, Knoxville, TN (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Here, we study the recombination process of three atoms scattering into an atom and diatomic molecule in heteronuclear mixtures of ultracold atomic gases with large and positive interspecies scattering length at finite temperature. We calculate the temperature dependence of the three-body recombination rates by extracting universal scaling functions that parametrize the energy dependence of the scattering matrix. We compare our results to experimental data for the ⁴⁰K–⁸⁷Rb mixture and make a prediction for ⁶Li–⁸⁷Rb. We find that contributions from higher partial wave channels significantly impact the total rate and, in systems with particularly large mass imbalance, can even obliterate the recombination minima associated with the Efimov effect.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE

Grant/Contract Number:: AC52-06NA25396; AC05-00OR22725

OSTI ID:: 1415418

Alternate ID(s):: OSTI ID: 1380050

Report Number(s):: LA-UR-17-26065; PLRAAN; TRN: US1800812

Journal Information:: Physical Review A, Vol. 96, Issue 3; ISSN 2469-9926

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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