static screening calculation using the truncated Coulomb potential

[siyuchen]

I am running the example of 2D hBN at http://www.yambo-code.org/wiki/index.ph ... al_systems.

I was wondering if we need to do a static screening calculation using the truncated Coulomb potential before we run the BSE calculation. It seems that the tutotial just jumped over the static screening calculation (?)

[Daniele Varsano]

Dear Siyuchen,

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Yes, you need it, but note that if you have done a previous GW calculation the static screening can be read from the plasmon-pole database (this is what is done in the tutorial), so that you do not need to recompute it. You can notice that the input file is built using the (-p p) option. In this way, the code will read the ndb.pp database and will read the static part.

Best,

Daniele