Alfè, D and Bartók, AP and Csányi, G and Gillan, MJ (2013) Communication: energy benchmarking with quantum Monte Carlo for water nano-droplets and bulk liquid water. J Chem Phys, 138. 221102-.Full text not available from this repository.
We show the feasibility of using quantum Monte Carlo (QMC) to compute benchmark energies for configuration samples of thermal-equilibrium water clusters and the bulk liquid containing up to 64 molecules. Evidence that the accuracy of these benchmarks approaches that of basis-set converged coupled-cluster calculations is noted. We illustrate the usefulness of the benchmarks by using them to analyze the errors of the popular BLYP approximation of density functional theory (DFT). The results indicate the possibility of using QMC as a routine tool for analyzing DFT errors for non-covalent bonding in many types of condensed-phase molecular system.
|Divisions:||Div C > Applied Mechanics|
|Depositing User:||Cron Job|
|Date Deposited:||07 Mar 2014 11:25|
|Last Modified:||08 Dec 2014 02:18|