Universality and chaoticity in ultracold K+KRb chemical reactions
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.
- Authors:
-
- Univ. of Nevada, Las Vegas, NV (United States)
- Temple Univ., Philadelphia, PA (United States)
- Temple Univ., Philadelphia, PA (United States); St. Petersburg State Univ. (Russia)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1414101
- Report Number(s):
- LA-UR-17-20822
Journal ID: ISSN 2041-1723
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 8; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Inorganic and Physical Chemistry; Ultracold chemistry, ultracold molecules, quantum reactive scattering
Citation Formats
Croft, J. F. E., Makrides, C., Li, M., Petrov, A., Kendrick, B. K., Balakrishnan, N., and Kotochigova, S. Universality and chaoticity in ultracold K+KRb chemical reactions. United States: N. p., 2017.
Web. doi:10.1038/ncomms15897.
Croft, J. F. E., Makrides, C., Li, M., Petrov, A., Kendrick, B. K., Balakrishnan, N., & Kotochigova, S. Universality and chaoticity in ultracold K+KRb chemical reactions. United States. https://doi.org/10.1038/ncomms15897
Croft, J. F. E., Makrides, C., Li, M., Petrov, A., Kendrick, B. K., Balakrishnan, N., and Kotochigova, S. Wed .
"Universality and chaoticity in ultracold K+KRb chemical reactions". United States. https://doi.org/10.1038/ncomms15897. https://www.osti.gov/servlets/purl/1414101.
@article{osti_1414101,
title = {Universality and chaoticity in ultracold K+KRb chemical reactions},
author = {Croft, J. F. E. and Makrides, C. and Li, M. and Petrov, A. and Kendrick, B. K. and Balakrishnan, N. and Kotochigova, S.},
abstractNote = {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.},
doi = {10.1038/ncomms15897},
journal = {Nature Communications},
number = ,
volume = 8,
place = {United States},
year = {Wed Jul 19 00:00:00 EDT 2017},
month = {Wed Jul 19 00:00:00 EDT 2017}
}
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