SEARCH Articles Figures Tables Adiabatic approximation vibrational Adiabatic approximation vibrational excitation Adiabatic approximation, appropriate for vibrational excitation Adiabatic approximation, vibrationally Approximate separation of rotations and vibrations Approximation decoupling of rotation and vibrations Born-Oppenheimer approximation vibration-rotation Hamiltonians Born-Oppenheimer approximation vibrational selection rules Born-Oppenheimer approximations vibrational transitions Exchange approximations, vibrational modes Harmonic approximation vibrational properties Intramolecular vibrational energy redistribution approximations Lattice vibrations Debye approximation Lattice vibrations Einstein approximation Lattice vibrations harmonic approximation Self-consistent-field approximation vibrational states Vibrational Properties Beyond the Harmonic Approximation Vibrational energy relaxation approximations Vibrational methods harmonic approximation Vibrationally adiabatic zero-curvature approximation