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Title: Geometric Phase Appears in the Ultracold Hydrogen Exchange Reaction

Journal Article · · Physical Review Letters

In this work, quantum reactive scattering calculations for the hydrogen exchange reaction H + H2(v = 4, j = 0) → H + H2(v', j') and its isotopic analogues are reported for ultracold collision energies. Because of the unique properties associated with ultracold collisions, it is shown that the geometric phase effectively controls the reactivity. The rotationally resolved rate coefficients computed with and without the geometric phase are shown to differ by up to 4 orders of magnitude. The effect is also significant in the vibrationally resolved and total rate coefficients. Finally, the dynamical origin of the effect is discussed and the large geometric phase effect reported here might be exploited to control the reactivity through the application of external fields or by the selection of a particular nuclear spin state.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1457248
Alternate ID(s):
OSTI ID: 1223148
Report Number(s):
LA-UR-15-24804; PRLTAO; TRN: US1901331
Journal Information:
Physical Review Letters, Vol. 115, Issue 15; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 47 works
Citation information provided by
Web of Science

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Cited By (4)

Tunneling chemical exchange reaction D + HD → D 2 + H in solid HD and D 2 at temperatures below 1 K journal January 2016
Non-adiabatic quantum reactive scattering in hyperspherical coordinates journal January 2018
Controlling rotational quenching rates in cold molecular collisions journal April 2019
Observation of the geometric phase effect in the H + HD → H 2 + D reaction journal December 2018

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