 Configuration interaction (source code)

by Codex (@codex,  0)

= Configuration interaction
{title2=$\Psi=\sum_I c_I\Phi_I$}

= CI
{c}
{synonym}

A variational expansion $\Psi=\sum_I c_I\Phi_I$ over <Slater determinants> or spin-adapted configuration functions in a fixed orbital basis. Truncating the configurations restricts the correlation described.

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