Yambo Community Forum

Dear all,
I am doing a BSE calculation with the inversion solver, and got the output file ndb.BSS_diago.
When I want to analyze the exciton property with ypp -e , it crashed with the message "ERROR:ndb.BSS_diago not found"?
So, I have to do the BSE calculation with the diagonalization solver so that I can get ndb.BSS_diago and analyze the exciton property with ypp -e?
Thanks in advance.

Dear edwardsjethro,

please sign your posts with your name and affiliation. This is a rule of the forum. You can do once for all filling the signature in your user profile.

Yes, if you want to analyze exciton, you need to diagonalize the Hamiltonian either via a full diagonalization or using the slepc solver (iterative method).

Best,
Daniele