KetBra.is_SI

KetBra.is_SI(order=None)

Check if \(\vec{k}_s = -\vec{k}_1+\vec{k}_2+\vec{k}_3\) (rephasing).

order is a list of LightInteraction names specifying which interaction corresponds to which wavevector. First name is \(\vec{k}_1\), second one is \(\vec{k}_2\), etc.