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Universality and chaoticity in ultracold K+KRb chemical reactions
Croft, JFE Makrides, C Li, M Petrov, A Kendrick, BK Balakrishnan, N Kotochigova, S
Croft, JFE
Makrides, C
Li, M
Petrov, A
Kendrick, BK
Balakrishnan, N
Kotochigova, S
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Journal Article
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2017-07-19
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10.1038/ncomms15897
Abstract
© The Author(s) 2017. 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.
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Nature Communications
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