arc.calculations_atom_pairstate.PairStateInteractions.matrixElement#
- PairStateInteractions.matrixElement#
matrixElement[i] gives index of state in
PairStateInteractions.channelbasis (that doesn’t resolve \(m_j\) states), for the given index i of the state inPairStateInteractions.basisStates( \(m_j\) resolving) basis.