Dear all,
I am trying to check electron hole pair effect on phonon dispersion. After relaxing structure under “nqfd” , I want to get the phonon dispersion…in this section, for force calculation ( as a part of phonon calculation ) do I need to add again nqfd in input file? I know that we shouldn’t relax structure but not sure if it is necessary to consider nqfd in displacement structures ? Thank you for any guidance.