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mirror of https://github.com/LCPQ/quantum_package synced 2024-11-03 20:54:00 +01:00
quantum_package/plugins/Properties/mulliken.irp.f

108 lines
2.8 KiB
Fortran

BEGIN_PROVIDER [double precision, spin_population, (ao_num_align,ao_num)]
implicit none
integer :: i,j
BEGIN_DOC
! spin population on the ao basis :
! spin_population(i,j) = rho_AO(alpha)(i,j) - rho_AO(beta)(i,j) * <AO_i|AO_j>
END_DOC
spin_population = 0.d0
do i = 1, ao_num
do j = 1, ao_num
spin_population(j,i) = one_body_spin_density_ao(i,j) * ao_overlap(i,j)
enddo
enddo
END_PROVIDER
BEGIN_PROVIDER [double precision, spin_population_angular_momentum, (0:ao_l_max)]
implicit none
integer :: i
double precision :: accu
spin_population_angular_momentum = 0.d0
do i = 1, ao_num
spin_population_angular_momentum(ao_l(i)) += spin_gross_orbital_product(i)
enddo
END_PROVIDER
BEGIN_PROVIDER [double precision, spin_gross_orbital_product, (ao_num)]
implicit none
spin_gross_orbital_product = 0.d0
integer :: i,j
BEGIN_DOC
! gross orbital product for the spin population
END_DOC
do i = 1, ao_num
do j = 1, ao_num
spin_gross_orbital_product(i) += spin_population(j,i)
enddo
enddo
END_PROVIDER
BEGIN_PROVIDER [double precision, mulliken_spin_densities, (nucl_num)]
implicit none
integer :: i,j
BEGIN_DOC
!ATOMIC SPIN POPULATION (ALPHA MINUS BETA)
END_DOC
mulliken_spin_densities = 0.d0
do i = 1, ao_num
mulliken_spin_densities(ao_nucl(i)) += spin_gross_orbital_product(i)
enddo
END_PROVIDER
BEGIN_PROVIDER [double precision, electronic_population_alpha, (ao_num_align,ao_num)]
&BEGIN_PROVIDER [double precision, electronic_population_beta, (ao_num_align,ao_num)]
implicit none
integer :: i,j
BEGIN_DOC
! spin population on the ao basis :
! spin_population(i,j) = rho_AO(alpha)(i,j) - rho_AO(beta)(i,j) * <AO_i|AO_j>
END_DOC
electronic_population_alpha = 0.d0
electronic_population_beta = 0.d0
do i = 1, ao_num
do j = 1, ao_num
electronic_population_alpha(j,i) = one_body_dm_ao_alpha(i,j) * ao_overlap(i,j)
electronic_population_beta(j,i) = one_body_dm_ao_beta(i,j) * ao_overlap(i,j)
enddo
enddo
END_PROVIDER
BEGIN_PROVIDER [double precision, gross_orbital_product_alpha, (ao_num)]
&BEGIN_PROVIDER [double precision, gross_orbital_product_beta, (ao_num)]
implicit none
spin_gross_orbital_product = 0.d0
integer :: i,j
BEGIN_DOC
! gross orbital product
END_DOC
do i = 1, ao_num
do j = 1, ao_num
gross_orbital_product_alpha(i) += electronic_population_alpha(j,i)
gross_orbital_product_beta(i) += electronic_population_beta(j,i)
enddo
enddo
END_PROVIDER
BEGIN_PROVIDER [double precision, mulliken_densities_alpha, (nucl_num)]
&BEGIN_PROVIDER [double precision, mulliken_densities_beta, (nucl_num)]
implicit none
integer :: i,j
BEGIN_DOC
!
END_DOC
mulliken_densities_alpha = 0.d0
mulliken_densities_beta = 0.d0
do i = 1, ao_num
mulliken_densities_alpha(ao_nucl(i)) += gross_orbital_product_alpha(i)
mulliken_densities_beta(ao_nucl(i)) += gross_orbital_product_beta(i)
enddo
END_PROVIDER