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Geometric Phase Effects in Ultracold Chemical Reactions

1
Theoretical Division (T-1, MS B221), Los Alamos National Laboratory, Los Alamos, NM 87545, USA
2
Department of Chemistry and Biochemistry, University of Nevada, Las Vegas, NV 89154, USA
*
Author to whom correspondence should be addressed.
Atoms 2019, 7(3), 65; https://doi.org/10.3390/atoms7030065
Received: 9 April 2019 / Revised: 17 June 2019 / Accepted: 27 June 2019 / Published: 3 July 2019
(This article belongs to the Special Issue Few-body Physics in Ultracold Quantum Gases)
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Abstract

The role of the geometric phase effect in chemical reaction dynamics has long been a topic of active experimental and theoretical investigations. The topic has received renewed interest in recent years in cold and ultracold chemistry where it was shown to play a decisive role in state-to-state chemical dynamics. We provide a brief review of these developments focusing on recent studies of O + OH and hydrogen exchange in the H + H 2 and D + HD reactions at cold and ultracold temperatures. Non-adiabatic effects in ultracold chemical dynamics arising from the conical intersection between two electronic potential energy surfaces are also briefly discussed. By taking the hydrogen exchange reaction as an illustrative example it is shown that the inclusion of the geometric phase effect captures the essential features of non-adiabatic dynamics at collision energies below the conical intersection. View Full-Text
Keywords: ultracold chemistry; ultracold molecules; ultracold reactions; geometric phase effect; controlled chemistry ultracold chemistry; ultracold molecules; ultracold reactions; geometric phase effect; controlled chemistry
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Kendrick, B.K.; Balakrishnan, N. Geometric Phase Effects in Ultracold Chemical Reactions. Atoms 2019, 7, 65.

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