mirror of https://github.com/pfloos/quack
74 lines
2.0 KiB
Fortran
74 lines
2.0 KiB
Fortran
double precision function GTpp_SigC(p,w,eta,nBas,nC,nO,nV,nR,nOOs,nVVs,nOOt,nVVt,e,Om1s,rho1s,Om2s,rho2s, &
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Om1t,rho1t,Om2t,rho2t)
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! Compute diagonal of the correlation part of the self-energy
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implicit none
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include 'parameters.h'
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! Input variables
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integer,intent(in) :: p
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double precision,intent(in) :: w
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double precision,intent(in) :: eta
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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) :: nOOs,nOOt
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integer,intent(in) :: nVVs,nVVt
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double precision,intent(in) :: e(nBas)
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double precision,intent(in) :: Om1s(nVVs),Om1t(nVVt)
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double precision,intent(in) :: rho1s(nBas,nBas,nVVs),rho1t(nBas,nBas,nVVt)
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double precision,intent(in) :: Om2s(nOOs),Om2t(nOOt)
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double precision,intent(in) :: rho2s(nBas,nBas,nOOs),rho2t(nBas,nBas,nOOt)
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! Local variables
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integer :: i,a,cd,kl
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double precision :: eps
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! Initialize
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GTpp_SigC = 0d0
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!----------------------------------------------
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! Occupied part of the T-matrix self-energy
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!----------------------------------------------
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do i=nC+1,nO
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do cd=1,nVVs
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eps = w + e(i) - Om1s(cd)
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GTpp_SigC = GTpp_SigC + rho1s(p,i,cd)**2*eps/(eps**2 + eta**2)
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end do
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do cd=1,nVVt
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eps = w + e(i) - Om1t(cd)
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GTpp_SigC = GTpp_SigC + rho1t(p,i,cd)**2*eps/(eps**2 + eta**2)
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end do
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end do
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!----------------------------------------------
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! Virtual part of the T-matrix self-energy
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!----------------------------------------------
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do a=nO+1,nBas-nR
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do kl=1,nOOs
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eps = w + e(a) - Om2s(kl)
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GTpp_SigC = GTpp_SigC + rho2s(p,a,kl)**2*eps/(eps**2 + eta**2)
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end do
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do kl=1,nOOt
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eps = w + e(a) - Om2t(kl)
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GTpp_SigC = GTpp_SigC + rho2t(p,a,kl)**2*eps/(eps**2 + eta**2)
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end do
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end do
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end function
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