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Irreducible representation of KS orbitals

Posted: Fri Apr 11, 2014 3:51 am
by martinspenke
Hi all,

Is there any possibility to find out the irreducible representations of KS orbitals obtained from abinit for molecules in a box ?

Bests

Re: Irreducible representation of KS orbitals

Posted: Mon May 26, 2014 10:37 pm
by mverstra
Good question.

This has been worked on from time to time, but is still not in production. The principle is simple, if you already have the wf in a box: apply each symmetry operation in turn, and check the effect on the wf (which should be real), in terms of norm and sign. That gives you the characters - compare to the tables for your point group and you have the irreps. Of course what you want is for abinit to do it for you automatically - not yet I'm afraid.

Matthieu