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QuantumPackage/plugins/local/cipsi_tc_bi_ortho/energy.irp.f

52 lines
1.3 KiB
Fortran

BEGIN_PROVIDER [ logical, initialize_pt2_E0_denominator ]
implicit none
BEGIN_DOC
! If true, initialize pt2_E0_denominator
END_DOC
initialize_pt2_E0_denominator = .True.
END_PROVIDER
BEGIN_PROVIDER [ double precision, pt2_E0_denominator, (N_states) ]
implicit none
BEGIN_DOC
! E0 in the denominator of the PT2
END_DOC
integer :: i,j
pt2_E0_denominator = eigval_right_tc_bi_orth
! if (initialize_pt2_E0_denominator) then
! if (h0_type == "EN") then
! pt2_E0_denominator(1:N_states) = psi_energy(1:N_states)
! else if (h0_type == "HF") then
! do i=1,N_states
! j = maxloc(abs(psi_coef(:,i)),1)
! pt2_E0_denominator(i) = psi_det_hii(j)
! enddo
! else if (h0_type == "Barycentric") then
! pt2_E0_denominator(1:N_states) = barycentric_electronic_energy(1:N_states)
! else if (h0_type == "CFG") then
! pt2_E0_denominator(1:N_states) = psi_energy(1:N_states)
! else
! print *, h0_type, ' not implemented'
! stop
! endif
! do i=1,N_states
! call write_double(6,pt2_E0_denominator(i)+nuclear_repulsion, 'PT2 Energy denominator')
! enddo
! else
! pt2_E0_denominator = -huge(1.d0)
! endif
END_PROVIDER
BEGIN_PROVIDER [ double precision, pt2_overlap, (N_states, N_states) ]
implicit none
BEGIN_DOC
! Overlap between the perturbed wave functions
END_DOC
pt2_overlap(1:N_states,1:N_states) = 0.d0
END_PROVIDER