### Question related to cohsex gw calculation

Posted:

**Sat Feb 20, 2021 11:12 am**Dear Developers,

I would like to learn the cohsex gw calculation using version 5.0. With the command line option yambo -gw0 c following input is produced. T

gw0 # [R] GW approximation

cohsex # [R][Xp] COlumb Hole Screened EXchange

dyson # [R] Dyson Equation solver

HF_and_locXC # [R] Hartree-Fock

em1s # [R][Xs] Statically Screened Interaction

dipoles # [R] Oscillator strenghts (or dipoles)

EXXRLvcs= 69697 RL # [XX] Exchange RL components

VXCRLvcs= 69697 RL # [XC] XCpotential RL components

Chimod= "HARTREE" # [X] IP/Hartree/ALDA/LRC/PF/BSfxc

% BndsRnXs

1 | 300 | # [Xs] Polarization function bands

%

NGsBlkXs= 1 RL # [Xs] Response block size

% LongDrXs

1.000000 | 0.000000 | 0.000000 | # [Xs] [cc] Electric Field

%

XTermKind= "none" # [X] X terminator ("none","BG" Bruneval-Gonze)

GWoIter=0 # [GW] GWo self-consistent (evGWo) iterations on eigenvalues

GWIter=0 # [GW] GW self-consistent (evGW) iterations on eigenvalues

%QPkrange # [GW] QP generalized Kpoint/Band indices

1|19|1|300|

i) Tag related to GbndRnge is missing. What command should I use to get the proper input.

% GbndRnge

| | # [GW] G[W] bands range

%

ii) If I want to continue to do the real time simulation after the cohsex gw

a)Do I need to do collision part ?

b) which HXC potential should I use?

Regards

I would like to learn the cohsex gw calculation using version 5.0. With the command line option yambo -gw0 c following input is produced. T

gw0 # [R] GW approximation

cohsex # [R][Xp] COlumb Hole Screened EXchange

dyson # [R] Dyson Equation solver

HF_and_locXC # [R] Hartree-Fock

em1s # [R][Xs] Statically Screened Interaction

dipoles # [R] Oscillator strenghts (or dipoles)

EXXRLvcs= 69697 RL # [XX] Exchange RL components

VXCRLvcs= 69697 RL # [XC] XCpotential RL components

Chimod= "HARTREE" # [X] IP/Hartree/ALDA/LRC/PF/BSfxc

% BndsRnXs

1 | 300 | # [Xs] Polarization function bands

%

NGsBlkXs= 1 RL # [Xs] Response block size

% LongDrXs

1.000000 | 0.000000 | 0.000000 | # [Xs] [cc] Electric Field

%

XTermKind= "none" # [X] X terminator ("none","BG" Bruneval-Gonze)

GWoIter=0 # [GW] GWo self-consistent (evGWo) iterations on eigenvalues

GWIter=0 # [GW] GW self-consistent (evGW) iterations on eigenvalues

%QPkrange # [GW] QP generalized Kpoint/Band indices

1|19|1|300|

i) Tag related to GbndRnge is missing. What command should I use to get the proper input.

% GbndRnge

| | # [GW] G[W] bands range

%

ii) If I want to continue to do the real time simulation after the cohsex gw

a)Do I need to do collision part ?

b) which HXC potential should I use?

Regards