Using Force-Matched Potentials To Improve the Accuracy of Density Functional Tight Binding for Reactive Conditions
Journal Article
·
· Journal of Chemical Theory and Computation
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
We show that force matching can be used to determine accurate empirical repulsive energies for the density functional tight binding method (DFTB) for chemical reactivity in condensed phases. Our approach yields improved results over previous parametrizations for molten liquid carbon and a phenolic polymer under combustion conditions. The method that we present here allows for predictions of chemical properties over longer time periods than accessible via Kohn–Sham density functional theory while retaining its accuracy.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1466944
- Report Number(s):
- LLNL-JRNL--675158; 797912
- Journal Information:
- Journal of Chemical Theory and Computation, Journal Name: Journal of Chemical Theory and Computation Journal Issue: 10 Vol. 11; ISSN 1549-9618
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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