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Effect of the increase in molecular complexity on the statistical properties of vibrational spectra. Four coupled Morse oscillators

✍ Scribed by Fabio Pichierri; Naseem Rahman

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 357 KB
Volume: 223
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)00456-0

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✦ Synopsis

Energy level statistics are presented for the vibrational levels of polyatomic molecules utilizing a local mode Hamiltonian made of four coupled Morse oscillators. The nearest-neighbour level spacing distribution shows a progressive transition towards a Wigner distribution. The L& statistics of Dyson-Mehta and correlation coefficients also lead to the same conclusion. The effect of the model-independent kinetic (Wilson) coupling is found to be overwhelmingly predominant over coordinate coupling.

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