Yambo Community Forum

Yambo can work only by using symmorphic symmetries.

We will add a run-time check in order to prevent the use of translations. But, in the meantime, be careful and check ALWAYS that your symmetry group does not contain translations.

In the new version of PWSCF, still in CVS http://qe-forge.org/snapshots.php?group_id=10, it has been introduced
a new input variable force_symmorphic to force the symmetry group to be symmorphic by disabling symmetry operations
having an associated fractionary translation. This flag has to be set .true. for all calculations with YAMBO.