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quack/src/GW/renormalization_factor_SRG.f90
2022-11-29 12:11:09 +01:00

39 lines
915 B
Fortran

subroutine renormalization_factor_SRG(eta,nBas,nC,nO,nV,nR,nS,e,Omega,rho,Z)
! Compute renormalization factor for GW
implicit none
include 'parameters.h'
! Input variables
double precision,intent(in) :: eta
integer,intent(in) :: nBas
integer,intent(in) :: nC
integer,intent(in) :: nO
integer,intent(in) :: nV
integer,intent(in) :: nR
integer,intent(in) :: nS
double precision,intent(in) :: e(nBas)
double precision,intent(in) :: Omega(nS)
double precision,intent(in) :: rho(nBas,nBas,nS)
! Local variables
integer :: p,i,a,jb
double precision :: eps
! Output variables
double precision,intent(out) :: Z(nBas)
! Initialize
Z(:) = 0d0
! Compute renormalization factor from derivative of SigC
Z(:) = 1d0/(1d0 - Z(:))
end subroutine renormalization_factor_SRG