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qp2/src/tools/print_wf.irp.f

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Fortran
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program print_wf
implicit none
BEGIN_DOC
! Print the ground state wave function stored in the |EZFIO| directory
! in the intermediate normalization.
!
! It also prints a lot of information regarding the excitation
! operators from the reference determinant ! and a first-order
! perturbative analysis of the wave function.
!
! If the wave function strongly deviates from the first-order analysis,
! something funny is going on :)
END_DOC
! this has to be done in order to be sure that N_det, psi_det and
! psi_coef are the wave function stored in the |EZFIO| directory.
read_wf = .True.
touch read_wf
call routine
end
subroutine routine
implicit none
integer :: i
integer :: degree
double precision :: hij,hii,coef_1,h00
integer :: exc(0:2,2,2)
double precision :: phase
integer :: h1,p1,h2,p2,s1,s2
double precision :: get_two_e_integral
double precision :: norm_mono_a,norm_mono_b
double precision :: norm_mono_a_2,norm_mono_b_2
double precision :: norm_mono_a_pert_2,norm_mono_b_pert_2
double precision :: norm_mono_a_pert,norm_mono_b_pert
double precision :: delta_e,coef_2_2
norm_mono_a = 0.d0
norm_mono_b = 0.d0
norm_mono_a_2 = 0.d0
norm_mono_b_2 = 0.d0
norm_mono_a_pert = 0.d0
norm_mono_b_pert = 0.d0
norm_mono_a_pert_2 = 0.d0
norm_mono_b_pert_2 = 0.d0
do i = 1, min(N_det_print_wf,N_det)
print*,''
print*,'i = ',i
call debug_det(psi_det(1,1,i),N_int)
call get_excitation_degree(psi_det(1,1,i),psi_det(1,1,1),degree,N_int)
print*,'degree = ',degree
if(degree == 0)then
print*,'Reference determinant '
call i_H_j(psi_det(1,1,i),psi_det(1,1,i),N_int,h00)
else
call i_H_j(psi_det(1,1,i),psi_det(1,1,i),N_int,hii)
call i_H_j(psi_det(1,1,1),psi_det(1,1,i),N_int,hij)
delta_e = hii - h00
coef_1 = hij/(h00-hii)
if(hij.ne.0.d0)then
if (delta_e > 0.d0) then
coef_2_2 = 0.5d0 * (delta_e - dsqrt(delta_e * delta_e + 4.d0 * hij * hij ))/ hij
else
coef_2_2 = 0.5d0 * (delta_e + dsqrt(delta_e * delta_e + 4.d0 * hij * hij )) /hij
endif
else
coef_2_2 = 0.d0
endif
call get_excitation(psi_det(1,1,1),psi_det(1,1,i),exc,degree,phase,N_int)
call decode_exc(exc,degree,h1,p1,h2,p2,s1,s2)
print*,'phase = ',phase
if(degree == 1)then
print*,'s1',s1
print*,'h1,p1 = ',h1,p1
if(s1 == 1)then
norm_mono_a += dabs(psi_coef(i,1)/psi_coef(1,1))
norm_mono_a_2 += dabs(psi_coef(i,1)/psi_coef(1,1))**2
norm_mono_a_pert += dabs(coef_1)
norm_mono_a_pert_2 += dabs(coef_1)**2
else
norm_mono_b += dabs(psi_coef(i,1)/psi_coef(1,1))
norm_mono_b_2 += dabs(psi_coef(i,1)/psi_coef(1,1))**2
norm_mono_b_pert += dabs(coef_1)
norm_mono_b_pert_2 += dabs(coef_1)**2
endif
double precision :: hmono,hdouble
call i_H_j_verbose(psi_det(1,1,1),psi_det(1,1,i),N_int,hij,hmono,hdouble,phase)
print*,'hmono = ',hmono
print*,'hdouble = ',hdouble
print*,'hmono+hdouble = ',hmono+hdouble
print*,'hij = ',hij
else if(degree ==2)then
print*,'s1',s1
print*,'h1,p1 = ',h1,p1
print*,'s2',s2
print*,'h2,p2 = ',h2,p2
endif
print*,'<Ref| H |D_I> = ',hij
print*,'Delta E = ',h00-hii
print*,'coef pert (1) = ',coef_1
print*,'coef 2x2 = ',coef_2_2
print*,'Delta E_corr = ',psi_coef(i,1)/psi_coef(1,1) * hij
endif
print*,'amplitude = ',psi_coef(i,1)/psi_coef(1,1)
enddo
print*,''
print*,'L1 norm of mono alpha = ',norm_mono_a
print*,'L1 norm of mono beta = ',norm_mono_b
print*, '---'
print*,'L2 norm of mono alpha = ',norm_mono_a_2
print*,'L2 norm of mono beta = ',norm_mono_b_2
print*, '-- perturbative mono'
print*,''
print*,'L1 norm of pert alpha = ',norm_mono_a_pert
print*,'L1 norm of pert beta = ',norm_mono_b_pert
print*,'L2 norm of pert alpha = ',norm_mono_a_pert_2
print*,'L2 norm of pert beta = ',norm_mono_b_pert_2
end