[Pw_forum] a question about parameters for ecutwfc and ecutrho

Chaohao Hu chaohao2002 at 163.com
Mon Oct 17 10:10:01 CEST 2005


Dear all users,
  Now I am confused to the difference between ecutwfc and ecutrho. In general plane wave code, only the energy cutoff for wavefunctions is adequate. Why do we need ecutrho parameter in PWSCF? In the help file, The explaination for ecutrho is too simple. Who can tell more details and orginal reference about it?
Thanks in advance.
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