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quantum_package/plugins/QMC/pot_ao_pseudo_ints.irp.f
Anthony Scemama f3b2bea214 Merged QMC modules (#208)
* Fixed mmap

* Truncated wf a la QMC=Chem

* Merged QmcChem and qmcpack modules
2017-07-12 23:58:45 +02:00

132 lines
4.0 KiB
Fortran

BEGIN_PROVIDER [ double precision, ao_pseudo_grid, (ao_num,-pseudo_lmax:pseudo_lmax,0:pseudo_lmax,nucl_num,pseudo_grid_size) ]
implicit none
BEGIN_DOC
! Grid points for f(|r-r_A|) = \int Y_{lm}^{C} (|r-r_C|, \Omega_C) \chi_i^{A} (r-r_A) d\Omega_C
!
! <img src="http://latex.codecogs.com/gif.latex?f(|r-r_A|)&space;=&space;\int&space;Y_{lm}^{C}&space;(|r-r_C|,&space;\Omega_C)&space;\chi_i^{A}&space;(r-r_A)&space;d\Omega_C"
! title="f(|r-r_A|) = \int Y_{lm}^{C} (|r-r_C|, \Omega_C) \chi_i^{A} (r-r_A) d\Omega_C" />
END_DOC
! l,m : Y(l,m) parameters
! c(3) : pseudopotential center
! a(3) : Atomic Orbital center
! n_a(3) : Powers of x,y,z in the Atomic Orbital
! g_a : Atomic Orbital exponent
! r : Distance between the Atomic Orbital center and the considered point
double precision, external :: ylm_orb
integer :: n_a(3)
double precision :: a(3), c(3), g_a
integer :: i,j,k,l,m,n,p
double precision :: dr, Ulc
double precision :: y
double precision, allocatable :: r(:)
allocate (r(pseudo_grid_size))
dr = pseudo_grid_rmax/dble(pseudo_grid_size)
r(1) = 0.d0
do j=2,pseudo_grid_size
r(j) = r(j-1) + dr
enddo
ao_pseudo_grid = 0.d0
do j=1,pseudo_grid_size
do k=1,nucl_num
c(1:3) = nucl_coord(k,1:3)
do l=0,pseudo_lmax
do i=1,ao_num
a(1:3) = nucl_coord(ao_nucl(i),1:3)
n_a(1:3) = ao_power(i,1:3)
do p=1,ao_prim_num(i)
g_a = ao_expo_ordered_transp(p,i)
do m=-l,l
y = ylm_orb(l,m,c,a,n_a,g_a,r(j))
ao_pseudo_grid(i,m,l,k,j) = ao_pseudo_grid(i,m,l,k,j) + &
ao_coef_normalized_ordered_transp(p,i)*y
enddo
enddo
enddo
enddo
enddo
enddo
deallocate(r)
END_PROVIDER
BEGIN_PROVIDER [ double precision, mo_pseudo_grid, (ao_num,-pseudo_lmax:pseudo_lmax,0:pseudo_lmax,nucl_num,pseudo_grid_size) ]
implicit none
BEGIN_DOC
! Grid points for f(|r-r_A|) = \int Y_{lm}^{C} (|r-r_C|, \Omega_C) \phi_i^{A} (r-r_A) d\Omega_C
!
! <img src="http://latex.codecogs.com/gif.latex?f(|r-r_A|)&space;=&space;\int&space;Y_{lm}^{C}&space;(|r-r_C|,&space;\Omega_C)&space;\chi_i^{A}&space;(r-r_A)&space;d\Omega_C"
! title="f(|r-r_A|) = \int Y_{lm}^{C} (|r-r_C|, \Omega_C) \chi_i^{A} (r-r_A) d\Omega_C" />
END_DOC
! l,m : Y(l,m) parameters
! c(3) : pseudopotential center
! a(3) : Atomic Orbital center
! n_a(3) : Powers of x,y,z in the Atomic Orbital
! g_a : Atomic Orbital exponent
! r : Distance between the Atomic Orbital center and the considered point
double precision, external :: ylm_orb
integer :: n_a(3)
double precision :: a(3), c(3), g_a
integer :: i,j,k,l,m,n,p
double precision :: dr, Ulc
double precision :: y
double precision, allocatable :: r(:)
allocate (r(pseudo_grid_size))
dr = pseudo_grid_rmax/dble(pseudo_grid_size)
r(1) = 0.d0
do j=2,pseudo_grid_size
r(j) = r(j-1) + dr
enddo
mo_pseudo_grid = 0.d0
do n=1,pseudo_grid_size
do k=1,nucl_num
do l=0,pseudo_lmax
do m=-l,l
do i=1,ao_num
do j=1,mo_tot_num
if (dabs(ao_pseudo_grid(i,m,l,k,n)) < 1.e-12) then
cycle
endif
if (dabs(mo_coef(i,j)) < 1.e-8) then
cycle
endif
mo_pseudo_grid(j,m,l,k,n) = mo_pseudo_grid(j,m,l,k,n) + &
ao_pseudo_grid(i,m,l,k,n) * mo_coef(i,j)
enddo
enddo
enddo
enddo
enddo
enddo
deallocate(r)
END_PROVIDER
double precision function test_pseudo_grid_ao(i,j)
implicit none
integer, intent(in) :: i,j
integer :: k,l,m,n
double precision :: r, dr,u
dr = pseudo_grid_rmax/dble(pseudo_grid_size)
test_pseudo_grid_ao = 0.d0
r = 0.d0
do k=1,pseudo_grid_size
do n=1,nucl_num
do l = 0,pseudo_lmax
u = pseudo_v_kl(n,l,1) * exp(-pseudo_dz_kl(n,l,1)*r*r)* r*r*dr
do m=-l,l
test_pseudo_grid_ao += ao_pseudo_grid(i,m,l,n,k) * ao_pseudo_grid(j,m,l,n,k) * u
enddo
enddo
enddo
r = r+dr
enddo
end