Qxy

The xy component of $Q$ is defined as: $$\begin{equation} Q_{xy} = 3xy/r^2. \end{equation}$$ The equivalent operator in Quanty is created by:

Example.Quanty

OppQxy = NewOperator("Qxy", NF, IndexUp, IndexDn)

The operator could also be defined by:

Example.Quanty

Akm={{2,-2,sqrt(1.5)*I},{2, 2,-sqrt(1.5)*I}}
OppQxy=NewOperator("CF",NF,indexup,indexdn,Akm)