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clean up S^2 GHF

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This commit is contained in:
Pierre-Francois Loos 2023-11-16 19:38:32 +01:00
parent efd001b7cf
commit 0aabc1a5f4
1 changed files with 9 additions and 48 deletions
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57
src/HF/print_GHF.f90
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@ -80,7 +80,6 @@ subroutine print_GHF(nBas,nBas2,nO,eHF,C,P,S,ENuc,ET,EV,EJ,EK,EGHF,dipole)
Pba = matmul(transpose(Cb),matmul(S,Ca))
Pbb = matmul(transpose(Cb),matmul(S,Cb))
! Compute components of S = (Sx,Sy,Sz)
Sx = 0.5d0*(trace_matrix(nO,Pab) + trace_matrix(nO,Pba))
@ -89,17 +88,14 @@ subroutine print_GHF(nBas,nBas2,nO,eHF,C,P,S,ENuc,ET,EV,EJ,EK,EGHF,dipole)
! Compute <S^2> = <Sx^2> + <Sy^2> + <Sz^2>
SpSm = 0d0
do i=1,nO
do j=1,nO
SpSm = SpSm + Pab(i,i)*Pba(j,j) - Pab(i,j)*Pba(j,i)
end do
end do
SpSm = 0.5d0*(trace_matrix(nO,Paa) + SpSm)
! Sx2 = 0.25d0*trace_matrix(nO,Paa+Pbb) + 0.25d0*trace_matrix(nO,Pab+Pba)**2 &
! - 0.5d0*trace_matrix(nO,matmul(Paa,Pbb) + matmul(Pab,Pab))
SpSm = trace_matrix(nO,Paa) + SpSm
print*,'<S^+S^-> = ',SpSm
SmSp = 0d0
do i=1,nO
@ -107,10 +103,8 @@ subroutine print_GHF(nBas,nBas2,nO,eHF,C,P,S,ENuc,ET,EV,EJ,EK,EGHF,dipole)
SmSp = SmSp + Pba(i,i)*Pab(j,j) - Pba(i,j)*Pab(j,i)
end do
end do
SmSp = 0.5d0*(trace_matrix(nO,Pbb) + SmSp)
! Sy2 = 0.25d0*trace_matrix(nO,Paa+Pbb) - 0.25d0*trace_matrix(nO,Pab-Pba)**2 &
! - 0.5d0*trace_matrix(nO,matmul(Paa,Pbb) - matmul(Pab,Pab))
SmSp = trace_matrix(nO,Pbb) + SmSp
print*,'<S^-S^+> = ',SmSp
Sz2 = 0d0
do i=1,nO
@ -121,45 +115,17 @@ subroutine print_GHF(nBas,nBas2,nO,eHF,C,P,S,ENuc,ET,EV,EJ,EK,EGHF,dipole)
Sz2 = 0.25d0*(dble(nO) + Sz2)
print*,'<Sz^2> = ',Sz2
Sz2 = 0.25d0*trace_matrix(nO,Paa+Pbb) &
- 0.25d0*trace_matrix(nO,Paa-Pbb)**2 &
- 0.25d0*trace_matrix(nO,matmul(Paa-Pbb,Paa-Pbb))
! Compute <S^2> from Sz^2, S^+S^- and S^-S^+
S2 = Sz*(Sz+1d0) + trace_matrix(nO,Pbb) + 0.25d0*trace_matrix(nO,Paa+Pbb)
do i=1,nO
do j=1,nO
S2 = S2 - 0.25d0*(Paa(i,j) - Pbb(i,j))**2 &
+ (Pba(i,i)*Pab(j,j) - Pba(i,j)*Pab(j,i))
end do
end do
S2 = Sz2 + 0.5d0*(SpSm + SmSp)
print*,'<S^2> = ',S2
! Compute <Sx^2> and <Sy^2> from <S^2>, <Sz^2>, <S^+S^-> and <S^-S^+>
Sx2 = 0.5d0*(S2 - Sz2 + 0.5d0*(SmSp + SpSm))
print*,'<Sx^2> = ',Sx2
Sy2 = 0.5d0*(S2 - Sz2 - 0.5d0*(SmSp + SpSm))
print*,'<Sy^2> = ',Sy2
! Sx2 = 0.25d0*trace_matrix(nO,Paa+Pbb) + 0.25d0*trace_matrix(nO,Pab+Pba)**2 &
! - 0.5d0*trace_matrix(nO,matmul(Paa,Pbb) + matmul(Pab,Pab))
! Sy2 = 0.25d0*trace_matrix(nO,Paa+Pbb) - 0.25d0*trace_matrix(nO,Pab-Pba)**2 &
! - 0.5d0*trace_matrix(nO,matmul(Paa,Pbb) - matmul(Pab,Pab))
! Sz2 = 0.25d0*trace_matrix(nO,Paa+Pbb) + 0.25d0*trace_matrix(nO,Paa-Pbb)**2 &
! - 0.25d0*trace_matrix(nO,matmul(Paa,Paa) + matmul(Pbb,Pbb)) &
! + 0.25d0*trace_matrix(nO,matmul(Pab,Pba) + matmul(Pba,Pab))
! S2 = Sz*(Sz+1d0) + trace_matrix(nO,Pbb) + 0.25d0*trace_matrix(nO,Paa+Pbb)
! do i=1,nO
! do j=1,nO
! S2 = S2 - 0.25d0*(Paa(i,j) - Pbb(i,j))**2 &
! + (Pba(i,i)*Pab(j,j) - Pba(i,j)*Pab(j,i))
! end do
! end do
! print*,'<S^2> = ',S2
! na = 0.d0
! nb = 0.d0
@ -187,9 +153,6 @@ subroutine print_GHF(nBas,nBas2,nO,eHF,C,P,S,ENuc,ET,EV,EJ,EK,EGHF,dipole)
! enddo
! S2 = Sz * (Sz + 1.d0) + nonco_z + contam_ghf
! deallocate(Paa,Pab,Pba,Pbb)
! Check collinearity and coplanarity
@ -255,10 +218,8 @@ subroutine print_GHF(nBas,nBas2,nO,eHF,C,P,S,ENuc,ET,EV,EJ,EK,EGHF,dipole)
write(*,'(A33,1X,F16.6)') ' <Sy> = ',Sy
write(*,'(A33,1X,F16.6)') ' <Sz> = ',Sz
write(*,'(A50)') '---------------------------------------'
write(*,'(A33,1X,F16.6)') ' <Sx**2> = ',Sx2
write(*,'(A33,1X,F16.6)') ' <Sy**2> = ',Sy2
write(*,'(A33,1X,F16.6)') ' <Sx^2+Sy^2> = ',S2 - Sz2
write(*,'(A33,1X,F16.6)') ' <Sz**2> = ',Sz2
write(*,'(A33,1X,F16.6)') ' <S**2> = ',Sx2+Sy2+Sz2
write(*,'(A33,1X,F16.6)') ' <S**2> = ',S2
write(*,'(A50)') '---------------------------------------'
write(*,'(A36)') ' Dipole moment (Debye) '