期刊
JOURNAL OF CHEMICAL PHYSICS
卷 151, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5124469
关键词
-
资金
- European Research Council (ERC) under the European Union's Horizon 2020 Research and Innovation Programme [683069-MOLEQULE]
We propose an algorithm for molecular dynamics or Monte Carlo simulations that uses an interpolation procedure to estimate potential energy values from energies and gradients evaluated previously at points of a simplicial mesh. We chose an interpolation procedure that is exact for harmonic systems and considered two possible mesh types: Delaunay triangulation and an alternative anisotropic triangulation designed to improve performance in anharmonic systems. The mesh is generated and updated on the fly during the simulation. The procedure is tested on two-dimensional quartic oscillators and on the path integral Monte Carlo evaluation of the HCN/DCN equilibrium isotope effect.
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