Screened Coulomb at q => 0 
 &inputgw
  tr2_gw=1.0d-9,
  prefix='si',
  amass(1)=28.08,
  outdir='./tmp',
  fildyn='si.dynG',
  fpol=.true.
  lrpa=.true.
  ldisp=.true. 
  nq1=6
  nq2=6
  nq3=6 
FREQUENCIES
 10 
 0.0d0
 1.0d0
 2.0d0
 3.0d0
 4.0d0
 5.0d0
 10.0d0 
 15.0d0
 20.0d0
 40.0d0