arc.calculations_atom_pairstate.PairStateInteractions.matR

PairStateInteractions.matR

Stores interaction matrices in pair-state basis that scale as \(1/R^3\), \(1/R^4\) and \(1/R^5\) with distance in matR[0], matR[1] and matR[2] respectively. These matrices correspond to dipole-dipole ( \(C_3\)), dipole-quadrupole ( \(C_4\)) and quadrupole-quadrupole ( \(C_5\)) interactions coefficients. Basis states are stored in PairStateInteractions.basisStates. Calculated by PairStateInteractions.defineBasis.