how to interpret GW calculation result?

[linn54]

Hi,
I just started doing GW in VASP. And at the end of the OUTCAR file from a GW0 calculation, the following information is printed out:
"
QP shifts <psi_nk| G(iteration)W_0 |psi_nk>: iteration 1
V_xc(DFT)= epsilon - (<T + V_ion + V_H > + <T+V_H+V_ion>^1 + <V_x>^1)

spin component 1

k-point 1 : 0.0000 0.0000 0.0000
band No. DFT-energies QP-energies sigma(DFT) V_xc(DFT) V^pw_x(r,r') Z occupation

1 -15.0356 -16.2361 -20.0390 -18.0045 -29.7430 0.5901 1.0000
2 -14.6490 -15.8772 -20.3461 -18.2421 -29.9305 0.5837 1.0000
"

One block of data is printed out for each k-point.
Is the Quasiparticle gap obtained by using the QP-energies information printed here? And how about the QP shift?
Are there other information that would be useful to notice in the OUTCAR?

Thank you!

[support_vasp]

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