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Phys. Rev. A 57, 3381 - 3402 (1998)

1/N expansion in the vibron model: Diatomic molecules

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S. Kuyucak * and M. K. Roberts
Department of Theoretical Physics, Research School of Physical Sciences, Australian National University, Canberra, Australian Capital Territory 0200, Australia

Received 13 November 1997

Using angular-momentum-projected mean-field theory, we develop 1/N expansion solutions for the vibron model of diatomic molecules. Analytic expressions of spectroscopic accuracy are derived for rotational-vibrational energy levels and for the intensities of transitions among them. The results are used in a systematic study of diatomic molecules in the vibron model with a view to finding appropriate Hamiltonians for a realistic description of rotation-vibration spectra.


©1998 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.57.3381
DOI: 10.1103/PhysRevA.57.3381
PACS: 33.20.-t, 31.15.Hz

* Electronic address: sek105@rsphysse.anu.edu.au

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