Coupled Cluster Theory: Size Consistency

In course

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Description

This lecture covers the Coupled Cluster theory, focusing on the expansion of the perturbed wavefunction in doubly excited Slater determinants and the second-order correction to the energy. It discusses Size Extensivity and Size Consistency, post-Hartree-Fock methods like Configuration Interaction and Coupled Cluster Theory, and why truncated Configuration Interaction is not size-consistent.

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Instructor

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