[Pw_forum] query on e-ph matrix element

[Ajit Vallabhaneni]

Dear Paolo,

              Thanks for your response. But i am not sure i understand it completely. Are you implying that "g" cannot be calculated for a particular phonon (of specific q and nu) ? I am not entirely familiar with the concepts of irreducible representation. But in the expression for "g", there is a omega_nu,q and also the derivative of V_SCF with respect to displacement along a particular nu for a given q. 


Thanks
Ajit