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Using Force-Matched Potentials To Improve the Accuracy of Density Functional Tight Binding for Reactive Conditions

Journal Article · · Journal of Chemical Theory and Computation
 [1];  [1];  [1]
  1. 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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Cited By (2)

Synthesis of functionalized nitrogen-containing polycyclic aromatic hydrocarbons and other prebiotic compounds in impacting glycine solutions journal January 2019
Transferable density functional tight binding for carbon, hydrogen, nitrogen, and oxygen: Application to shock compression journal January 2019

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