What Does BWCCD Stand For?

BWCCD stands for Brillouin Wigner Coupled Cluster With Double Excitation

BWCCD, or Brillouin Wigner Coupled Cluster With Double Excitation, is a sophisticated computational method used in quantum chemistry to accurately describe the electronic structure of many-body systems. This technique combines the Brillouin-Wigner perturbation theory with the coupled cluster framework, facilitating the inclusion of double excitations—correlations arising from the simultaneous promotion of two electrons to higher energy states. BWCCD is particularly valuable for capturing dynamic electron correlations and providing high-level theoretical insights into molecular properties and behaviors in complex chemical environments.

Added on 14th April 2008 | Last edited on 16th June 2025 | Edit Acronym