[Pw_forum] on nosym=.true.

[Mahmoud Payami Shabestari]

Dear Gabriele,

As you mentioned, the translation was very small. Paolo pointed out that 
constraining the atoms leads to such a problem because during the 
relaxation, the number of k-points may change.
Thank you again and cheers,
mahmoud
   
> 
> By inspecting your forces I guess that this should not happen, because
> the slab is mirror symmetric wrt xy plane and so the forces are. Even
> if this is not the case, the translation of the whole slab should be
> small and should cause no problem (unless you have a sawtooth
> potential, maybe).
> 
> Regards,
> 
> GS
> 
> > Thank you again for your kind help.
> >  
> > Bests,
> > mahmoud
> >  
> >  
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> 
> § Gabriele Sclauzero, EPFL SB ITP CSEA
>    PH H2 462, Station 3, CH-1015 Lausanne
> 
>