Does IQtensor support finite abelain groups such as Z_{q} symmetry.

Question

It seems IQtensor only supports U(1) symmetry group, but what about finite groups, like Z_{q}?

Or doest it respect parity symmetry and or a combination of them? like U(1)Z_{q}Z_{2}.

Please let me know of any documentation.

Answer 1

Good question: yes since ITensor version 2.0 we have a fairly general quantum number system that can handle U(1) and Z_q type Abelian quantum numbers. The system can handle combinations as well: each QN object is an ordered collection of the various conserved quantum numbers.

Here is the documentation: http://itensor.org/docs.cgi?page=classes/qn

Let me know if you have any more specific questions about it.

Miles