subroutine GTpp_phBSE_dynamic_kernel_B(eta,nBas,nC,nO,nV,nR,nS,nOO,nVV,lambda,eGT,Omega1,Omega2,rho1,rho2,OmBSE,TB,ZB) ! Compute the off-diagonal dynamic part of the Bethe-Salpeter equation matrices for GT 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 integer,intent(in) :: nOO integer,intent(in) :: nVV double precision,intent(in) :: lambda double precision,intent(in) :: eGT(nBas) double precision,intent(in) :: OmBSE double precision,intent(in) :: Omega1(nVV) double precision,intent(in) :: Omega2(nOO) double precision,intent(in) :: rho1(nBas,nBas,nVV) double precision,intent(in) :: rho2(nBas,nBas,nOO) ! Local variables double precision :: chi double precision :: eps integer :: i,j,a,b,ia,jb,cd,kl ! Output variables double precision,intent(out) :: TB(nS,nS) double precision,intent(out) :: ZB(nS,nS) ! Initialization TB(:,:) = 0d0 ZB(:,:) = 0d0 ! Build dynamic A matrix ia = 0 do i=nC+1,nO do a=nO+1,nBas-nR ia = ia + 1 jb = 0 do j=nC+1,nO do b=nO+1,nBas-nR jb = jb + 1 chi = 0d0 do cd=1,nVV eps = + OmBSE - Omega1(cd) + (eGT(i) + eGT(b)) chi = chi + rho1(i,j,cd)*rho1(b,a,cd)*eps/(eps**2 + eta**2) end do do kl=1,nOO eps = + OmBSE + Omega2(kl) - (eGT(a) + eGT(j)) chi = chi + rho2(i,j,kl)*rho2(b,a,kl)*eps/(eps**2 + eta**2) end do TB(ia,jb) = TB(ia,jb) + lambda*chi chi = 0d0 do cd=1,nVV eps = + OmBSE - Omega1(cd) + (eGT(i) + eGT(b)) chi = chi + rho1(i,j,cd)*rho1(b,a,cd)*(eps**2 - eta**2)/(eps**2 + eta**2)**2 end do do kl=1,nOO eps = + OmBSE + Omega2(kl) - (eGT(a) + eGT(j)) chi = chi + rho2(i,a,kl)*rho2(b,a,kl)*(eps**2 - eta**2)/(eps**2 + eta**2)**2 end do ZB(ia,jb) = ZB(ia,jb) - lambda*chi end do end do end do end do end subroutine