Details
| Original language | English |
|---|---|
| Article number | 133401 |
| Number of pages | 6 |
| Journal | Physical review letters |
| Volume | 128 |
| Issue number | 13 |
| Publication status | Published - 1 Apr 2022 |
Abstract
We explore the physical origin and the general validity of a propensity rule for the conservation of the hyperfine spin state in three-body recombination. This rule was recently discovered for the special case of Rb87 with its nearly equal singlet and triplet scattering lengths. Here, we test the propensity rule for Rb85 for which the scattering properties are very different from Rb87. The Rb2 molecular product distribution is mapped out in a state-to-state fashion using resonance-enhanced multiphoton ionization detection schemes which fully cover all possible molecular spin states. Interestingly, for the experimentally investigated range of binding energies from zero to ∼13 GHz×h we observe that the spin-conservation propensity rule also holds for Rb85. From these observations and a theoretical analysis we derive an understanding for the conservation of the hyperfine spin state. We identify several criteria to judge whether the propensity rule will also hold for other elements and collision channels.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review letters, Vol. 128, No. 13, 133401, 01.04.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Spin-Conservation Propensity Rule for Three-Body Recombination of Ultracold Rb Atoms
AU - Haze, Shinsuke
AU - D'Incao, José P.
AU - Dorer, Dominik
AU - Deiß, Markus
AU - Tiemann, Eberhard
AU - Julienne, Paul S.
AU - Denschlag, Johannes Hecker
N1 - Funding Information: This work was financed by the Baden-Württemberg Stiftung through the Internationale Spitzenforschung program (Contract No. BWST ISF2017-061) and by the German Research Foundation (DFG, Deutsche Forschungsgemeinschaft) within Contract No. 399903135. We acknowledge support from bwForCluster JUSTUS 2 for high performance computing. J. P. D. also acknowledges partial support from the U.S. National Science Foundation (PHY-2012125) and NASA/JPL (1502690). The authors would like to thank Jinglun Li for helpful discussions. J. P. D. thanks Timur Tscherbul for stimulating discussions.
PY - 2022/4/1
Y1 - 2022/4/1
N2 - We explore the physical origin and the general validity of a propensity rule for the conservation of the hyperfine spin state in three-body recombination. This rule was recently discovered for the special case of Rb87 with its nearly equal singlet and triplet scattering lengths. Here, we test the propensity rule for Rb85 for which the scattering properties are very different from Rb87. The Rb2 molecular product distribution is mapped out in a state-to-state fashion using resonance-enhanced multiphoton ionization detection schemes which fully cover all possible molecular spin states. Interestingly, for the experimentally investigated range of binding energies from zero to ∼13 GHz×h we observe that the spin-conservation propensity rule also holds for Rb85. From these observations and a theoretical analysis we derive an understanding for the conservation of the hyperfine spin state. We identify several criteria to judge whether the propensity rule will also hold for other elements and collision channels.
AB - We explore the physical origin and the general validity of a propensity rule for the conservation of the hyperfine spin state in three-body recombination. This rule was recently discovered for the special case of Rb87 with its nearly equal singlet and triplet scattering lengths. Here, we test the propensity rule for Rb85 for which the scattering properties are very different from Rb87. The Rb2 molecular product distribution is mapped out in a state-to-state fashion using resonance-enhanced multiphoton ionization detection schemes which fully cover all possible molecular spin states. Interestingly, for the experimentally investigated range of binding energies from zero to ∼13 GHz×h we observe that the spin-conservation propensity rule also holds for Rb85. From these observations and a theoretical analysis we derive an understanding for the conservation of the hyperfine spin state. We identify several criteria to judge whether the propensity rule will also hold for other elements and collision channels.
UR - http://www.scopus.com/inward/record.url?scp=85127877935&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2112.13714
DO - 10.48550/arXiv.2112.13714
M3 - Article
C2 - 35426725
AN - SCOPUS:85127877935
VL - 128
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 13
M1 - 133401
ER -