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qp_plugins_scemama/devel/cc/form_taus_nc.irp.f
2019-09-14 14:25:53 +02:00

29 lines
554 B
Fortran

subroutine form_taus_nc(taus)
! Form tau in CCSD
implicit none
! Local variables
integer :: i,j,k,l
integer :: a,b,c,d
! Output variables
double precision,intent(out) :: taus(spin_occ_num,spin_occ_num,spin_vir_num,spin_vir_num)
do b=1,spin_vir_num
do a=1,spin_vir_num
do j=1,spin_occ_num
do i=1,spin_occ_num
taus(i,j,a,b) = t2_cc(i,j,a,b) + 0.5d0*(t1_cc(i,a)*t1_cc(j,b) - t1_cc(i,b)*t1_cc(j,a))
enddo
enddo
enddo
enddo
end subroutine form_taus_nc