Example: qsGW calculation: N2
*****************************

"Download qsGW_N2.run"

   #! /bin/sh

   # Like in evGW in qsGW the quasi-particle energies are updated
   # until self-consistency is reached.
   # In qsGW, the density is updated as well, however, the self-energy is
   # mapped to a static effective potential and the Dyson equation is
   # solved by diagonalization instead of inversion.
   # The results of a qsGW are independent of the choice of the underlying
   # exchange-correlation functional and are usually the most accurate ones.
   # The same is done in qsGW0, but the screened interaction is not updated.

   for k in 'qsGW' 'qsGW0' ; do 

   rm -r ams.results

   $AMSBIN/ams << eor
   Symmetry
     SymmetrizeTolerance 0.001
   End

   System
     Atoms
       N 0.0000 0.0000 0.0000
       N 0.0000 0.0000 1.0977
     End
     Symmetrize Yes
   End

   task SinglePoint

   Engine adf
     Basis
       Core None
       Type TZ2P
     End
     symmetry nosym
     XC
        hartreefock
     end
     MBPT
        nTime 12
        nFrequency 12
     End  
     numericalQuality Good
     GW
        DIIS 3 
        nStates 3
        selfconsistency $k
     END

   EndEngine
   eor

   done
