Accurate modeling of the potential energy surface of atmospheric molecular clusters boosted by neural networks.

ABSTRACT: The computational cost of accurate quantum chemistry (QC) calculations of large molecular systems can often be unbearably high. Machine learning offers a lower computational cost compared to QC methods while maintaining their accuracy. In this study, we employ the polarizable atom interaction neural network (PaiNN) architecture to train and model the potential energy surface of molecular clusters relevant to atmospheric new particle formation, such as sulfuric acid-ammonia clusters. We compare the differences between PaiNN and previous kernel ridge regression modeling for the Clusteromics I-V data sets. We showcase three models capable of predicting electronic binding energies and interatomic forces with mean absolute errors of <0.3 kcal mol^-1 and <0.2 kcal mol^-1 Å

SUBMITTER: Kubecka J 

PROVIDER: S-EPMC11334116 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature