Coupled Cluster Theory
Jaemin Kim
The coupled cluster (CC) theory is used to construct many-electron Schrödinger equations by considering electron correlations. What differentiates the CC theory from earlier computational methods to solve for the molecular Schrödinger equation is that the CC theory (and its truncated version) is size-extensive. The size-extensivity problem of truncated configuration interaction (FCI) methods can be linked to the linear parametrization of the CI wavefunction. The CC wavefunction, on the other hand, relies on an exponential parametrization.
Learn More →