Universality and chaoticity in ultracold K+KRb chemical reactions

J. F. E. Croft, C. Makrides, M. Li, A. Petrov, B. K. Kendrick, N. Balakrishnan () and S. Kotochigova
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J. F. E. Croft: University of Nevada
C. Makrides: Temple University
M. Li: Temple University
A. Petrov: Temple University
B. K. Kendrick: MS B221), Los Alamos National Laboratory
N. Balakrishnan: University of Nevada
S. Kotochigova: Temple University

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract A fundamental question in the study of chemical reactions is how reactions proceed at a collision energy close to absolute zero. This question is no longer hypothetical: quantum degenerate gases of atoms and molecules can now be created at temperatures lower than a few tens of nanokelvin. Here we consider the benchmark ultracold reaction between, the most-celebrated ultracold molecule, KRb and K. We map out an accurate ab initio ground-state potential energy surface of the K2Rb complex in full dimensionality and report numerically-exact quantum-mechanical reaction dynamics. The distribution of rotationally resolved rates is shown to be Poissonian. An analysis of the hyperspherical adiabatic potential curves explains this statistical character revealing a chaotic distribution for the short-range collision complex that plays a key role in governing the reaction outcome.

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15897

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DOI: 10.1038/ncomms15897

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