Hi all,

I want to perform a full-frequency GW calculation and then perform a GW+BSE calculation.

If I have performed a full-frequency GW calculation (real-axis) and have dynamical screening stored in em1d file.

Q1 : I want to know can I use dielectric function from real-axis GW calculation (em1d) to skip the static screening calculation (-b) in following BSE calculation ?

From my test, it seem OK for PPA (pp) and COHSEX (em1s). For em1d, I always fail to proceed.

Q2 : Can I just make a BSE calculation without GW Quasi-particle energy correction? in other words, if I don't implement QP database or scissor operator into BSE procedure, is the dielectric function from BSE still meaningful or not ?

Weiqing