Physics

Cluster (spacecraft)

Statistical physics

Geodesy

Variety (cybernetics)

Benchmark (surveying)

Artificial intelligence

Coupled cluster

Geography

Programming language

Molecule

Computer science

Phase (matter)

Complex system

Molecular dynamics

Quantum mechanics

Quantum

Physical Review Letters

Coupled cluster theory is a general and systematic electronic structure method, but in particular the highly accurate "gold standard" coupled cluster singles, doubles and perturbative triples, CCSD(T), can only be applied to small systems. To overcome this limitation, we introduce a framework to transfer CCSD(T) accuracy of finite molecular clusters to extended condensed phase systems using a high-dimensional neural network potential. This approach, which is automated, allows one to perform high-quality coupled cluster molecular dynamics, CCMD, as we demonstrate for liquid water including nuclear quantum effects. The machine learning strategy is very efficient, generic, can be systematically improved, and is applicable to a variety of complex systems.

Coupled Cluster Molecular Dynamics of Condensed Phase Systems Enabled by Machine Learning Potentials: Liquid Water Benchmark