Berry-Phase and Symmetry of the Ground State in Dynamical Jahn-Teller Systems

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We show through selected examples, relevant to the physics of fullerene ions, that the presence of a Berry phase in dynamical Jahn-Teller systems does not guarantee the degeneracy of the ground state, contrary to what previously believed. Moreover, we introduce a new class of Jahn-Teller systems with no Berry phase, as a generalization of the basic icosahedral $H \otimes h$ case.
8 pages, 1 ps fig

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Condensed Matter, Chemical Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/151922

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9709094
 http://arxiv.org/abs/cond-mat/9709094
 Fullerenes. Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials - volume 5, ed. by K.M. Kadish and R.S. Ruoff (The Electrochemical Society, Pennington, NJ, 1997), pag. 468.

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arXiv