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171 lines
4.6 KiB
Fortran
171 lines
4.6 KiB
Fortran
BEGIN_PROVIDER [ double precision, r2_cc, (spin_occ_num,spin_occ_num,spin_vir_num,spin_vir_num) ]
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implicit none
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BEGIN_DOC
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! t2 residues in non-canonical CCSD
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END_DOC
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integer :: i,j,m,n
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integer :: a,b,e,f
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double precision :: x
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double precision, allocatable :: tmp_oo(:,:), tmp_oo2(:,:)
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double precision, external :: u_dot_v
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allocate ( tmp_oo(spin_occ_num,spin_occ_num) )
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r2_cc(:,:,:,:) = OOVV(:,:,:,:)
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do b=1,spin_vir_num
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do a=1,spin_vir_num
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if (a == b) cycle
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do e=1,spin_vir_num
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x = u_dot_v( t1_cc(1,b), c_spin_fock_matrix_mo_ov(1,e), spin_occ_num )
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x = c_spin_fock_matrix_mo_vv(b,e) - x*0.5d0
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if (x == 0.d0) cycle
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tmp_oo(:,:) = t2_cc(:,:,a,e) * x
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r2_cc(:,:,a,b) = r2_cc(:,:,a,b) + tmp_oo(:,:)
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r2_cc(:,:,b,a) = r2_cc(:,:,b,a) - tmp_oo(:,:)
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end do
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do i=1,spin_occ_num
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do m=1,spin_occ_num
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tmp_oo(m,i) = t2_cc(i,m,a,b)
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enddo
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enddo
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do j=1,spin_occ_num
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do i=1,spin_occ_num
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x = 0.d0
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do m=1,spin_occ_num
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do e=1,spin_vir_num
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x = x + c_spin_fock_matrix_mo_ov(m,e) * &
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( tmp_oo(m,j)*t1_cc(i,e) - &
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tmp_oo(m,i)*t1_cc(j,e) )
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end do
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end do
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x = x + u_dot_v( tau_cc(1,1,a,b), cWoooo(1,1,i,j), spin_occ_num*spin_occ_num )
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x = x * 0.5d0 + &
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u_dot_v( tmp_oo(1,j), c_spin_fock_matrix_mo_oo(1,i), spin_occ_num ) - &
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u_dot_v( tmp_oo(1,i), c_spin_fock_matrix_mo_oo(1,j), spin_occ_num )
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do e=1,spin_vir_num
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x = x - sum(t2_cc(j,:,a,e)*cWovvo(:,b,e,i))
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end do
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r2_cc(i,j,a,b) = r2_cc(i,j,a,b) + x
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end do
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end do
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tmp_oo(:,:) = 0.d0
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do f=1,spin_vir_num
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do e=1,spin_vir_num
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x = 0.5d0*cWvvvv(a,b,e,f)
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if (x == 0.d0) cycle
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tmp_oo(:,:) = tmp_oo(:,:) + x*tau_cc(:,:,e,f)
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end do
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end do
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r2_cc(:,:,a,b) = r2_cc(:,:,a,b) + tmp_oo(:,:)
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do j=1,spin_occ_num
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do e=1,spin_vir_num
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do m=1,spin_occ_num
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x = t1_cc(m,a)*OVVO(m,b,e,j)
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do i=1,spin_occ_num
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r2_cc(i,j,a,b) = r2_cc(i,j,a,b) + t2_cc(i,m,a,e)*cWovvo(m,b,e,j) - t1_cc(i,e)*x
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enddo
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end do
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end do
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end do
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do e=1,spin_vir_num
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do j=1,spin_occ_num
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do i=1,spin_occ_num
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do m=1,spin_occ_num
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r2_cc(i,j,a,b) = r2_cc(i,j,a,b) + t1_cc(j,e)*t1_cc(m,a)*OVVO(m,b,e,i)
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end do
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end do
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end do
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end do
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do e=1,spin_vir_num
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do j=1,spin_occ_num
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do m=1,spin_occ_num
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do i=1,spin_occ_num
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r2_cc(i,j,a,b) = r2_cc(i,j,a,b) - t2_cc(i,m,b,e)*cWovvo(m,a,e,j)
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end do
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end do
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end do
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end do
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do j=1,spin_occ_num
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do e=1,spin_vir_num
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do i=1,spin_occ_num
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do m=1,spin_occ_num
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r2_cc(i,j,a,b) = r2_cc(i,j,a,b) + t1_cc(i,e)*t1_cc(m,b)*OVVO(m,a,e,j)
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end do
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end do
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end do
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end do
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do e=1,spin_vir_num
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do j=1,spin_occ_num
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do i=1,spin_occ_num
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do m=1,spin_occ_num
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r2_cc(i,j,a,b) = r2_cc(i,j,a,b) + t2_cc(j,m,b,e)*cWovvo(m,a,e,i)
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end do
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end do
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end do
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end do
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do e=1,spin_vir_num
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do j=1,spin_occ_num
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do i=1,spin_occ_num
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do m=1,spin_occ_num
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r2_cc(i,j,a,b) = r2_cc(i,j,a,b) - t1_cc(j,e)*t1_cc(m,b)*OVVO(m,a,e,i)
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end do
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end do
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end do
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end do
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do j=1,spin_occ_num
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do e=1,spin_vir_num
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do i=1,spin_occ_num
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r2_cc(i,j,a,b) = r2_cc(i,j,a,b) + t1_cc(i,e)*VVVO(a,b,e,j)
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end do
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end do
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end do
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do e=1,spin_vir_num
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do i=1,spin_occ_num
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do j=1,spin_occ_num
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r2_cc(i,j,a,b) = r2_cc(i,j,a,b) - t1_cc(j,e)*VVVO(a,b,e,i)
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end do
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end do
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end do
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do j=1,spin_occ_num
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do i=1,spin_occ_num
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do m=1,spin_occ_num
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r2_cc(i,j,a,b) = r2_cc(i,j,a,b) - t1_cc(m,a)*OVOO(m,b,i,j)
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end do
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end do
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end do
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do j=1,spin_occ_num
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do i=1,spin_occ_num
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do m=1,spin_occ_num
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r2_cc(i,j,a,b) = r2_cc(i,j,a,b) + t1_cc(m,b)*OVOO(m,a,i,j)
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end do
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end do
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end do
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end do
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end do
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! Final expression of the t2 residue
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r2_cc(:,:,:,:) = delta_oovv(:,:,:,:)*t2_cc(:,:,:,:) - r2_cc(:,:,:,:)
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END_PROVIDER
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