Dear YSW:
If I want to change fsthick.Need I to repeat the evaluation of e-ph vertex on fine grids ?( my fine k/q grids are unchanged)
Since the number of wavevectors within the Fermi window changes depending on the value of fsthick (for example, please find the line containing “We only need to compute … q-points” in epw.out) You have to recalculate e-ph vertex even if your k/q grids are unchanged.
Regarding the convergence, you need to converge quantities w.r.t both the broadening and the # of grids.
PS) Could you confirm that your lambda doesn’t change with any unrealistic degaussw (very large and very small degaussw)?
Sincerely,
H. Lee