What Does CPCCSD Stand For?

CPCCSD stands for Coupled Perturbed Coupled Cluster With Single And Double Excitation

CPCCSD, or Coupled Perturbed Coupled Cluster With Single And Double Excitation, is a sophisticated computational method in quantum chemistry that extends the coupled cluster formalism to include perturbative corrections. It combines the accuracy of coupled cluster techniques for capturing electron correlation through single and double excitations with perturbative treatments to enhance the description of dynamic correlations. This approach is particularly useful for studying complex molecular systems and provides a robust framework for obtaining accurate energy predictions and properties of electronic wave functions.