mirror of https://github.com/pfloos/quack
85 lines
2.4 KiB
Fortran
85 lines
2.4 KiB
Fortran
subroutine crGRPA(dotest,TDA,nBas,nC,nO,nV,nR,nS,ENuc,EGHF,ERI,dipole_int,eHF)
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! Crossed-ring channel of the random phase approximation
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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) :: dotest
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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) :: EGHF
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double precision,intent(in) :: eHF(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(*,*)'* Generalized cr-RPA 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 = .false.
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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),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,eHF,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('crRPA@GHF','spinorbital',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,A3)') 'Tr@crRPA correlation energy = ',EcRPA,' au'
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write(*,'(2X,A50,F20.10,A3)') 'Tr@crRPA total energy = ',ENuc + EGHF + EcRPA,' au'
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write(*,*)'-------------------------------------------------------------------------------'
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write(*,*)
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if(dotest) then
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call dump_test_value('G','crRPA correlation energy',EcRPA)
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end if
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end subroutine
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