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

Abstract

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.

Authors:
 [1]; ORCiD logo [2];  [1];  [3]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1415418
Alternate Identifier(s):
OSTI ID: 1380050
Report Number(s):
LA-UR-17-26065
Journal ID: ISSN 2469-9926; PLRAAN; TRN: US1800812
Grant/Contract Number:  
AC52-06NA25396; AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 96; Journal Issue: 3; Journal ID: ISSN 2469-9926
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; Atomic and Nuclear Physics

Citation Formats

Emmons, Samuel B., Kang, Daekyoung, Acharya, Bijaya, and Platter, Lucas. Efimov effect for heteronuclear three-body systems at positive scattering length and finite temperature. United States: N. p., 2017. Web. doi:10.1103/PhysRevA.96.032706.
Emmons, Samuel B., Kang, Daekyoung, Acharya, Bijaya, & Platter, Lucas. Efimov effect for heteronuclear three-body systems at positive scattering length and finite temperature. United States. doi:10.1103/PhysRevA.96.032706.
Emmons, Samuel B., Kang, Daekyoung, Acharya, Bijaya, and Platter, Lucas. Fri . "Efimov effect for heteronuclear three-body systems at positive scattering length and finite temperature". United States. doi:10.1103/PhysRevA.96.032706. https://www.osti.gov/servlets/purl/1415418.
@article{osti_1415418,
title = {Efimov effect for heteronuclear three-body systems at positive scattering length and finite temperature},
author = {Emmons, Samuel B. and Kang, Daekyoung and Acharya, Bijaya and Platter, Lucas},
abstractNote = {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.},
doi = {10.1103/PhysRevA.96.032706},
journal = {Physical Review A},
number = 3,
volume = 96,
place = {United States},
year = {2017},
month = {9}
}

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