Page 1 of 1
Off-diagonal matrix elements of the self energy
Posted: Fri Sep 02, 2022 4:33 am
by Quxiao
Dear all,
Can Yambo consider the self-energy interaction of off-diagonal matrix elements between the bands during the GW calculation?
Thanks,
Re: Off-diagonal matrix elements of the self energy
Posted: Fri Sep 09, 2022 8:46 am
by Daniele Varsano
Dear Quxiao,
a full self-consistent calculation ie considering off diagonal elements of the self-energy can be done at COHSEX level using the yambo_sc executable.
Best,
Daniele
Re: Off-diagonal matrix elements of the self energy
Posted: Wed Sep 14, 2022 5:31 am
by Quxiao
Daniele Varsano wrote: ↑Fri Sep 09, 2022 8:46 am
Dear Quxiao,
a full self-consistent calculation ie considering off diagonal elements of the self-energy can be done at COHSEX level using the yambo_sc executable.
Best,
Daniele
Dear Daniele,
Thank you very much for your reply. In this case, can we use the same command for band calculation ? Such as 'yambo_sc -p p -g n -V par'
Thanks and Regards,
Re: Off-diagonal matrix elements of the self energy
Posted: Tue Mar 05, 2024 12:47 pm
by nilesh12
Dear all,
I am trying to perform Off-diagonal matrix elements calculation. In the input file, I defined the self-consistent model "COH+SEX+HARTREE". I am getting an error
Self-Consistent COH+SEX+HARTRE
[WARNING] HXC collisions not found. Potential is computed on the fly.
Please help me regarding this.
Thank you
Re: Off-diagonal matrix elements of the self energy
Posted: Thu Mar 07, 2024 9:41 am
by Daniele Varsano
Dear Nilesh,
this is a harmless warning, it is just a warning that collisions matrix elements have not been previously calculated and stored and are then computed on the fly.
Best,
Daniele