SEARCH Articles Figures Tables Born-Oppenheimer approximation vibration-rotation Hamiltonians Cartesian coordinates, vibration-rotation Hamiltonians Chain rules, vibration-rotation Hamiltonians Classical mechanics vibration-rotation Hamiltonians Complex rotation method Hamiltonian Differentials, vibration-rotation Hamiltonians Differentials, vibration-rotation Hamiltonians derivatives Directional derivatives, vibration-rotation Hamiltonians Effective Hamiltonian diatomic molecule rotational excitation Hamiltonian dynamical systems rotation number Hamiltonian matrix spin-rotation coupling Hamiltonian rotating diatom Hamiltonian rotating-wave approximation Hamiltonian rotation Hamiltonian rotation Hamiltonian rotational operator Hamiltonian rotations vibrations Hamiltonian systems rotation number Hamiltonian vibration-rotational Hamiltonian, nuclear quadrupole rotational Kinetic energy operator vibration-rotation Hamiltonians P,T-odd spin-rotational Hamiltonian Rotating wave transformation effective Hamiltonian Rotating-frame Hamiltonian Rotational Hamiltonian for space-quantised electron spin Rotational excitation, effective Hamiltonian Schrodinger equation vibration-rotation Hamiltonians Spin-rotational Hamiltonian The rotational Hamiltonian Triatomic molecule, vibration-rotation Hamiltonians Vibration-rotation Hamiltonians Vibration-rotation Hamiltonians angles Vibration-rotation Hamiltonians magnitude Vibration-rotation Hamiltonians projections Vibration-rotation Hamiltonians rotations Vibrational-rotational Hamiltonian Watson rotational Hamiltonians