Generalized extended Lagrangian Born-Oppenheimer molecular dynamics
Journal Article
·
· Journal of Chemical Physics
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
Extended Lagrangian Born-Oppenheimer molecular dynamics based on Kohn-Sham density functional theory is generalized in the limit of vanishing self-consistent field optimization prior to the force evaluations. The equations of motion are derived directly from the extended Lagrangian under the condition of an adiabatic separation between the nuclear and the electronic degrees of freedom. We show how this separation is automatically fulfilled and system independent. The generalized equations of motion require only one diagonalization per time step and are applicable to a broader range of materials with improved accuracy and stability compared to previous formulations.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC52-06NA25396; FWP#LANL20101053
- OSTI ID:
- 1184028
- Alternate ID(s):
- OSTI ID: 1212192; OSTI ID: 1416453
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Vol. 141 Journal Issue: 16; ISSN 0021-9606
- Publisher:
- American Institute of PhysicsCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 42 works
Citation information provided by
Web of Science
Web of Science
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