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fix error pt2 from det already in the wf
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@ -195,7 +195,10 @@ subroutine select_singles_and_doubles(i_generator,hole_mask,particle_mask,fock_d
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integer :: l_a, nmax, idx
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integer, allocatable :: indices(:), exc_degree(:), iorder(:)
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double precision, parameter :: norm_thr = 1.d-16
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! Removed to avoid introducing determinants already presents in the wf
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!double precision, parameter :: norm_thr = 1.d-16
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allocate (indices(N_det), &
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exc_degree(max(N_det_alpha_unique,N_det_beta_unique)))
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@ -215,10 +218,11 @@ subroutine select_singles_and_doubles(i_generator,hole_mask,particle_mask,fock_d
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i = psi_bilinear_matrix_rows(l_a)
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if (nt + exc_degree(i) <= 4) then
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idx = psi_det_sorted_order(psi_bilinear_matrix_order(l_a))
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if (psi_average_norm_contrib_sorted(idx) > norm_thr) then
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! Removed to avoid introducing determinants already presents in the wf
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!if (psi_average_norm_contrib_sorted(idx) > norm_thr) then
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indices(k) = idx
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k=k+1
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endif
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!endif
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endif
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enddo
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enddo
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@ -242,10 +246,11 @@ subroutine select_singles_and_doubles(i_generator,hole_mask,particle_mask,fock_d
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idx = psi_det_sorted_order( &
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psi_bilinear_matrix_order( &
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psi_bilinear_matrix_transp_order(l_a)))
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if (psi_average_norm_contrib_sorted(idx) > norm_thr) then
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! Removed to avoid introducing determinants already presents in the wf
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!if (psi_average_norm_contrib_sorted(idx) > norm_thr) then
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indices(k) = idx
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k=k+1
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endif
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!endif
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endif
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enddo
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enddo
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@ -566,6 +571,7 @@ subroutine fill_buffer_double(i_generator, sp, h1, h2, bannedOrb, banned, fock_d
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double precision, external :: diag_H_mat_elem_fock
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double precision :: E_shift
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double precision :: s_weight(N_states,N_states)
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logical, external :: is_in_wavefunction
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PROVIDE dominant_dets_of_cfgs N_dominant_dets_of_cfgs
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do jstate=1,N_states
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do istate=1,N_states
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@ -830,6 +836,24 @@ subroutine fill_buffer_double(i_generator, sp, h1, h2, bannedOrb, banned, fock_d
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end select
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end do
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! To force the inclusion of determinants with a positive pt2 contribution
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if (e_pert(istate) > 1d-8) then
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w = -huge(1.0)
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endif
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!!!BEGIN_DEBUG
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! ! To check if the pt2 is taking determinants already in the wf
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! if (is_in_wavefunction(det(N_int,1),N_int)) then
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! print*, 'A determinant contributing to the pt2 is already in'
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! print*, 'the wave function:'
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! call print_det(det(N_int,1),N_int)
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! print*,'contribution to the pt2 for the states:', e_pert(:)
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! print*,'error in the filtering in'
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! print*, 'cipsi/selection.irp.f sub: selecte_singles_and_doubles'
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! print*, 'abort'
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! call abort
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! endif
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!!!END_DEBUG
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integer(bit_kind) :: occ(N_int,2), n
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if (h0_type == 'CFG') then
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