Hi, I am looking at the pwscf code. When computing H|psi>, the kinetic part and nonlocal part are performed in k-space, however the local part V_local|psi> is performed in real space. I think calculation of local part V_local|psi> in k-space is more convenient if V_local can be transformed into k-space. What is the problem forbidding k-space calculation of V_local|psi> ?
best wishes, Yun-Peng
