[Pw_forum] k grid points in the calculations of electron-phonon interaction coefficients

[Caloma Trumica]

In the manual of calculating electron-phonon interaction coefficients:

http://www.quantum-espresso.org/wp-content/uploads/Doc/ph_user_guide/node9.html

Item 1 says that: "The latter MUST contain all [image: $ \bf k$] and [image:
$ \bf k$] + [image: $ \bf q$] grid points used in the subsequent
electron-phonon calculation"

I was wondering how we can make sure that the denser k-point grid contains
both the k and k+q grid points?

Thank you.

Andy.
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