Retrieving "Ground State Properties" from the archives

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1. Quantum Chemistry

   Linked via "ground-state properties"

   Configuration Interaction (CI): The true wavefunction is represented as a linear combination of the HF ground state determinant and excited state determinants (constructed from applying excitation operators to the reference determinant). Full CI (FCI) is exact within the basis set limit but computationally intractable for most chemical systems. Truncated [CI methods](/entries/configuration-interaction/…