2019-09-14 14:20:55 +02:00
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subroutine form_taus_nc(taus)
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2019-09-11 17:09:30 +02:00
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! Form tau in CCSD
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implicit none
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! Local variables
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integer :: i,j,k,l
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integer :: a,b,c,d
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! Output variables
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2019-09-14 14:15:25 +02:00
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double precision,intent(out) :: taus(spin_occ_num,spin_occ_num,spin_vir_num,spin_vir_num)
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2019-09-11 17:09:30 +02:00
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2019-09-14 14:15:25 +02:00
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do b=1,spin_vir_num
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do a=1,spin_vir_num
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do j=1,spin_occ_num
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do i=1,spin_occ_num
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2019-09-11 17:09:30 +02:00
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2019-09-14 14:20:55 +02:00
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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))
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2019-09-11 17:09:30 +02:00
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enddo
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enddo
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enddo
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enddo
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end subroutine form_taus_nc
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