Intramolecular vibrational energy redistribution and trapping in centro-symmetric chains by Fermi resonance

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Abstract
A model of intramolecular vibrational energy redistribution (IVR) in regular chain or ring molecules has been studied under conditions where both Fermi resonance coupling between different modes and symmetric linear coupling between similar oscillators on neighboring groups are important. The relation between coupling parameters and the time scale for decay of an initial state, the rate of energy transfer through the molecule, and the appearance of energy localization is examined.