mirror of
https://github.com/pfloos/quack
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79 lines
2.3 KiB
Fortran
79 lines
2.3 KiB
Fortran
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subroutine phGRPA(TDA,nBas,nC,nO,nV,nR,nS,ENuc,EHF,ERI,dipole_int,e)
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! Perform a direct random phase approximation calculation
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implicit none
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include 'parameters.h'
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include 'quadrature.h'
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! Input variables
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logical,intent(in) :: TDA
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integer,intent(in) :: nBas
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integer,intent(in) :: nC
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integer,intent(in) :: nO
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integer,intent(in) :: nV
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integer,intent(in) :: nR
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integer,intent(in) :: nS
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double precision,intent(in) :: ENuc
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double precision,intent(in) :: EHF
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double precision,intent(in) :: e(nBas)
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double precision,intent(in) :: ERI(nBas,nBas,nBas,nBas)
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double precision,intent(in) :: dipole_int(nBas,nBas,ncart)
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! Local variables
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integer :: ispin
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logical :: dRPA
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double precision,allocatable :: Aph(:,:)
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double precision,allocatable :: Bph(:,:)
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double precision,allocatable :: Om(:)
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double precision,allocatable :: XpY(:,:)
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double precision,allocatable :: XmY(:,:)
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double precision :: EcRPA
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! Hello world
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write(*,*)
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write(*,*)'***********************************************'
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write(*,*)'| Random-phase approximation calculation |'
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write(*,*)'***********************************************'
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write(*,*)
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! TDA
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if(TDA) then
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write(*,*) 'Tamm-Dancoff approximation activated!'
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write(*,*)
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end if
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! Initialization
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dRPA = .true.
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EcRPA = 0d0
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! Memory allocation
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allocate(Om(nS),XpY(nS,nS),XmY(nS,nS),Aph(nS,nS))
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if(.not.TDA) allocate(Bph(nS,nS))
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ispin = 3
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call phLR_A(ispin,dRPA,nBas,nC,nO,nV,nR,nS,1d0,e,ERI,Aph)
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if(.not.TDA) call phLR_B(ispin,dRPA,nBas,nC,nO,nV,nR,nS,1d0,ERI,Bph)
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call phLR(TDA,nS,Aph,Bph,EcRPA,Om,XpY,XmY)
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call print_excitation_energies('phRPA@GHF',ispin,nS,Om)
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call phLR_transition_vectors(.true.,nBas,nC,nO,nV,nR,nS,dipole_int,Om,XpY,XmY)
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write(*,*)
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write(*,*)'-------------------------------------------------------------------------------'
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write(*,'(2X,A50,F20.10)') 'Tr@phRPA correlation energy =',EcRPA
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write(*,'(2X,A50,F20.10)') 'Tr@phRPA total energy =',ENuc + EHF + EcRPA
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write(*,*)'-------------------------------------------------------------------------------'
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write(*,*)
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end subroutine
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