Recent experimental and theoretical studies indicate that intramolecularenergy redistribution (IVR) is nonstatistical on intermediate timescales evenin fairly large molecules. Therefore, it is interesting to revisit the the oldtopic of IVR versus quantum control and one expects that a classical-quantumperspective is appropriate to gain valuable insights into the issue. However,understanding classical phase space transport in driven systems is aprerequisite for such a correspondence based approach and is a challenging taskfor systems with more then two degrees of freedom. In this work we undertake adetailed study of the classical dynamics of a minimal model system - twokinetically coupled coupled Morse oscillators in the presence of amonochromatic laser field. Using the technique of wavelet transforms arepresentation of the high dimensional phase space, the resonance network orArnold web, is constructed and analysed. The key structures in phase spacewhich regulate the dissociation dynamics are identified. Furthermore, we showthat the web is nonuniform with the classical dynamics exhibiting extensivestickiness, resulting in anomalous transport. Our work also shows that pairwiseirrational barriers might be crucial even in higher dimensional systems.
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