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109 lines
3.2 KiB
Fortran
109 lines
3.2 KiB
Fortran
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BEGIN_PROVIDER [ double precision, ao_integrals_pt_chrg, (ao_num,ao_num)]
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BEGIN_DOC
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! Point charge-electron interaction, in the |AO| basis set.
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!
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! :math:`\langle \chi_i | -\sum_charge charge * \frac{1}{|r-R_charge|} | \chi_j \rangle`
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!
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! Notice the minus sign convention as it is supposed to be for electrons.
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END_DOC
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implicit none
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integer :: num_A, num_B, power_A(3), power_B(3)
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integer :: i, j, k, l, n_pt_in, m
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double precision :: alpha, beta
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double precision :: A_center(3),B_center(3),C_center(3)
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double precision :: overlap_x,overlap_y,overlap_z,overlap,dx,NAI_pol_mult
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ao_integrals_pt_chrg = 0.d0
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! if (read_ao_integrals_pt_chrg) then
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!
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! call ezfio_get_ao_one_e_ints_ao_integrals_pt_chrg(ao_integrals_pt_chrg)
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! print *, 'AO N-e integrals read from disk'
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!
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! else
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! if(use_cosgtos) then
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! !print *, " use_cosgtos for ao_integrals_pt_chrg ?", use_cosgtos
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!
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! do j = 1, ao_num
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! do i = 1, ao_num
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! ao_integrals_pt_chrg(i,j) = ao_integrals_pt_chrg_cosgtos(i,j)
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! enddo
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! enddo
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!
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! else
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!$OMP PARALLEL &
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!$OMP DEFAULT (NONE) &
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!$OMP PRIVATE (i,j,k,l,m,alpha,beta,A_center,B_center,C_center,power_A,power_B,&
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!$OMP num_A,num_B,Z,c,c1,n_pt_in) &
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!$OMP SHARED (ao_num,ao_prim_num,ao_expo_ordered_transp,ao_power,ao_nucl,pts_charge_coord,ao_coef_normalized_ordered_transp,nucl_coord,&
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!$OMP n_pt_max_integrals,ao_integrals_pt_chrg,n_pts_charge,pts_charge_z)
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n_pt_in = n_pt_max_integrals
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!$OMP DO SCHEDULE (dynamic)
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do j = 1, ao_num
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num_A = ao_nucl(j)
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power_A(1:3)= ao_power(j,1:3)
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A_center(1:3) = nucl_coord(num_A,1:3)
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do i = 1, ao_num
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num_B = ao_nucl(i)
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power_B(1:3)= ao_power(i,1:3)
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B_center(1:3) = nucl_coord(num_B,1:3)
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do l=1,ao_prim_num(j)
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alpha = ao_expo_ordered_transp(l,j)
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do m=1,ao_prim_num(i)
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beta = ao_expo_ordered_transp(m,i)
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double precision :: c, c1
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c = 0.d0
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do k = 1, n_pts_charge
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double precision :: Z
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Z = pts_charge_z(k)
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C_center(1:3) = pts_charge_coord(k,1:3)
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c1 = NAI_pol_mult( A_center, B_center, power_A, power_B &
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, alpha, beta, C_center, n_pt_in )
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c = c - Z * c1
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enddo
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ao_integrals_pt_chrg(i,j) = ao_integrals_pt_chrg(i,j) &
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+ ao_coef_normalized_ordered_transp(l,j) &
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* ao_coef_normalized_ordered_transp(m,i) * c
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enddo
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enddo
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enddo
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enddo
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!$OMP END DO
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!$OMP END PARALLEL
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! endif
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! IF(do_pseudo) THEN
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! ao_integrals_pt_chrg += ao_pseudo_integrals
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! ENDIF
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! endif
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! if (write_ao_integrals_pt_chrg) then
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! call ezfio_set_ao_one_e_ints_ao_integrals_pt_chrg(ao_integrals_pt_chrg)
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! print *, 'AO N-e integrals written to disk'
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! endif
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END_PROVIDER
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