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qp_plugins_scemama/devel/dmc_dress/dressing_vector.irp.f
2021-07-31 02:54:38 +02:00

34 lines
833 B
Fortran

BEGIN_PROVIDER [ double precision, dressing_column_h, (N_det,N_states) ]
&BEGIN_PROVIDER [ double precision, dressing_column_s, (N_det,N_states) ]
implicit none
BEGIN_DOC
! \Delta_{state-specific}. \Psi
! Diagonal element is divided by 2 because Delta = D + D^t
END_DOC
integer :: i,ii,k,j, l
double precision :: f, tmp
double precision, allocatable :: delta(:)
allocate(delta(N_det))
delta(1:N_det) = dmc_delta_h(1:N_det)
call dset_order(delta,psi_bilinear_matrix_order_reverse,N_det)
dressing_column_h(:,:) = 0.d0
dressing_column_s(:,:) = 0.d0
l = dressed_column_idx(1)
do j = 1, n_det
if (j == l) cycle
dressing_column_h(j,1) = delta(j)
dressing_column_h(l,1) -= psi_coef(j,1) * delta(j) / psi_coef(l,1)
enddo
dressing_column_h(l,1) += delta(l)
dressing_column_h(l,1) *= 0.5d0
END_PROVIDER