Octopus
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Definition at line 154 of file excited_states.F90.
Private Member Functions | |
real(real64) function | dstates_elec_mpmatrixelement_g (namespace, mesh, st1, st2, opst2) |
Returns <st1 | O | st2>, where both st1 and st2 are Slater determinants represented by states_elec_t st1 and st2. O is a one-body operator. More... | |
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Returns <st1 | O | st2>, where both st1 and st2 are Slater determinants represented by states_elec_t st1 and st2. O is a one-body operator.
The auxiliary Slater determinant opst2 is formed by the orbitals that result of applying operator O on each of the spin-orbitals of st2.
The routine directly applies Lowdin`s formula [P.-O. Lowdin, Phys. Rev. 97, 1474; Eq. 49].
Definition at line 592 of file excited_states.F90.