Properties of the intrinsic matrix elements of the interacting-boson-approximationE2operator in the rotational limit

It is shown that the dominance of $\beta \to \gamma$ and $\gamma \to g$ over $\beta \to g$ $E2\mathrm{}$ transitions in the SU(3) limit of the interacting-boson-approximation model reported by Warner and Casten can be explained simply in terms of properties of the intrinsic $E2\mathrm{}$ matrix elements.