The zz component of Q is defined as: Qzz=3z2/r2−1. The equivalent operator in Quanty is created by:
OppQzz = NewOperator("Qzz", NF, IndexUp, IndexDn)
The operator could also be defined by:
Akm={{2,0,2.0}} OppQzz=NewOperator("CF",NF,indexup,indexdn,Akm)