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Atomistic Simulations with High-Dimensional Neural Network Potentials
Atomistic Simulations with High-Dimensional Neural Network Potentials

Presented by Professor Jörg Behler from the University of Göttingen

Wednesday, October 12, 2022

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Join Professor Jörg Behler, Professor of Theoretical Chemistry at the University of Göttingen in this talk. The evolution of MLPs will be illustrated using high-dimensional neural networks, an important and frequently used type of MLPs. Examples demonstrating their applicability will be presented. 

In recent years, a lot of progress has been made in the development of machine learning potentials (MLPs) turning them into a standard tool for atomistic simulations in #chemistry and materials science. 

While the first generation of #MLPs has been restricted to small molecules with only a few degrees of freedom, the second generation extended the applicability of MLPs to high-dimensional systems containing thousands of atoms by constructing the total energy as a sum of environment-dependent atomic energies. Long-range #electrostatic interactions can be included in third-generation MLPs employing environment-dependent charges. Only recently limitations related to the underlying locality approximation could be overcome by increasingly popular fourth-generation potentials, which are able to describe non-local charge transfer and multiple charge states. 

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