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Universality and chaoticity in ultracold K+KRb chemical reactions

Author

Listed:
  • J. F. E. Croft

    (University of Nevada)

  • C. Makrides

    (Temple University)

  • M. Li

    (Temple University)

  • A. Petrov

    (Temple University
    NRC ‘Kurchatov Institute’ PNPI, Gatchina
    St Petersburg State University)

  • B. K. Kendrick

    (MS B221), Los Alamos National Laboratory)

  • N. Balakrishnan

    (University of Nevada)

  • S. Kotochigova

    (Temple University)

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.

Suggested Citation

  • J. F. E. Croft & C. Makrides & M. Li & A. Petrov & B. K. Kendrick & N. Balakrishnan & S. Kotochigova, 2017. "Universality and chaoticity in ultracold K+KRb chemical reactions," Nature Communications, Nature, vol. 8(1), pages 1-8, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15897
    DOI: 10.1038/ncomms15897
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