SEARCH Articles Figures Tables Adiabatic coupling Base particles Couples treatment Longuet-Higgins Longuet-Higgins phase-based treatment Non-adiabatic coupling Non-adiabatic coupling Longuet-Higgins phase-based treatment Non-adiabatic coupling phase Non-adiabatic coupling, Longuet-Higgins Non-adiabaticity Phase coupling Three coupling Three-particle Three-phase Treatment phases