Yambo Community Forum

Dear all
I try to calculate G0W0 bands structure interpolation according to the example 23 of the wannier90 manual. After using ./ypp,
<---> QP @ K 1 - 102 : b 69 - 76
<---> - S/N 007050 -------------------------- v.04.05.02 r.09122 -
<---> QP db read, writing QP corrections in the .eig Wannier90 format
<---> gw.unsorted.eig written
<---> [07] Memory Overview
<---> [08] Game Over & Game summary
An error occurred when using python3 gw2wannier90.py sese mmn amn
python3 gw2wannier90.py sese mmn amn
------------------------------
##############################
### gw2wannier90 interface ###
##############################
Kpoints number: 1024
Exclude bands option is used: be careful to be consistent with the choice of bands for the GW QP corrections.
G0W0 QP corrections read from sese.gw.unsorted.eig
Adding GW QP corrections to KS eigenvalues
Sorting
GW eigenvalues sorted
------------------------------
writing sese.gw.eig
sese.gw.eig written.
------------------------------

----------
AMN module
----------
Created on 2Apr2021 at 5:57: 1 with SCDM
Traceback (most recent call last):
File "gw2wannier90.py", line 208, in <module>
nb, nk, npr = np.array(s.split(), dtype=int)
ValueError: invalid literal for int() with base 10: '35.000000'.
How can i solve this error?
Thanks!
Pangrt

Dear Pangrt,

could you upload all the input and output files?
Also it would help if you could specify the version of Wannier90 that you are using.
Thanks.

Cheers,
Antimo

Dear Antimo，
Thank you for your reply.I am using wannier-3.1.0.
I found out that the reason for the error was that I used <auto_projections = .true.> instead of
<Begin Projections
C1:sp2;pz
C2:pz
End Projections>. This caused gw2wannier90.py to not run properly.
Thanks!
Pangrt

Dear all,

I make use of this thread since my question is linked to the same topic.
I am using yambo-5.0 and I have performed self-consistent GW computation, so I went beyond the simple G0W0 one.

Is it possible to follow the same procedure described in the wannier90 tutorials for the silicon G0W0 bandstructure in order to obtain the wannierization of the self consistent GW band structure?

Best,

Davide Romanin
-----------------------------------------------------
Post-doctoral fellow
Institut des NanoSciences de Paris
Sorbonne Université, CNRS
4 place Jussieu,
75252 PARIS Cedex 05

DavidPolito93 wrote: ↑Tue Apr 27, 2021 3:02 pm I am using yambo-5.0 and I have performed self-consistent GW computation, so I went beyond the simple G0W0 one.
Is it possible to follow the same procedure described in the wannier90 tutorials for the silicon G0W0 bandstructure in order to obtain the wannierization of the self consistent GW band structure?

In principle, the Wannier interface only support G0W0 calculations, being based on the assumption that the Green's function is built using the DFT-KS orbitals, or in other words that the wavefunction is still the DFT one.
However, if you perform the self-consistent cycle on the eigenvalues only, then you can still use the Wannier90 interface, exactly because the wave function is kept at the DFT level and you are not changing the orbitals in the Green's function but only the eigenvalues.

To my knowledge Yambo only supports the self-consistence cycle on the eigenvalues, so you can probably use the Wannier interface as it is

HTH,
Antimo

Dear David, Antimo,

just a comment to say that from yambo-5.0, the yambo_sc which allow to perform self-consistent calculation in COHSEX framework has been released,
even if it is an experimental feature and the support on that is very limited.

See here the complete release note:
https://github.com/yambo-code/yambo/releases

Best,
Daniele

Dear all,

Thank you for your answers!

I'll let you know if I find any problem

Best,

Davide