Configuration interaction method Wave functions 8 Configuration interactions 6 Ground state 6 Atoms 4 Computational costs 4 Expectation values 4 Quantum chemistry 4 Slater determinants 4 Atomic collision 2 Atomic system 2 Basis sets 2 Coalescence 2 Convergency rate 2 Correlated electrons 2 Correlation energy 2 Eigenvalues and eigenfunctions 2 Electric fields 2 Electron systems 2 Electrons 2 Excitation operators 2 Excited states 2 Full configuration interaction 2 Ground state wavefunctions 2 Ground-state energies 2 Harmonic potential 2 Helium 2 Linear coefficients 2 Lithium 2 Lithium-like systems 2