SEARCH Articles Figures Tables Conical intersections Jahn-Teller systems, Longuet-Higgins Conical intersections Longuet-Higgins loops Herzberg-Longuet-Higgins phase Herzberg-Longuet-Higgins phase, Jahn-Teller Herzberg-Longuet-Higgins phase, Jahn-Teller model Jahn-Teller effect Longuet-Higgins phase Jahn-Teller model, Longuet-Higgins phase Longuet-Higgins and Widom Longuet-Higgins basis Longuet-Higgins model Longuet-Higgins notation Longuet-Higgins phase, Longuet-Higgins phase-based treatment Longuet-Higgins phase-change rule Longuet-Higgins phase-change rule conical intersections Longuet-Higgins phase-change rule, loop Longuet-Higgins phase-change rule, loop construction Longuet-Higgins theory Longuet-Higgins, Hugh Longuet-Higgins, Hugh Christopher Longuet-Higgins-Pople Non-adiabatic coupling Jahn-Teller systems, Longuet-Higgins Non-adiabatic coupling Longuet-Higgins phase-based treatment Non-adiabatic coupling, Longuet-Higgins Non-adiabatic coupling, Longuet-Higgins phase-based treatment, three-particle Non-adiabatic coupling, Longuet-Higgins phase-based treatment, two-dimensional Primitive Period Isometric Transformations and the Longuet-Higgins Group Two-state molecular system, non-adiabatic Herzberg-Longuet-Higgins phase