Vibronic Ground-state Degeneracies and the Berry Phase: A Continuous Symmetry Perspective
Quantum Physics
2018-01-12 v3 Other Condensed Matter
Chemical Physics
Abstract
We develop a geometric construction to prove the inevitability of the electronic ground-state (adiabatic) Berry phase for a class of Jahn-Teller models with maximal continuous symmetries and N > 2 intersecting electronic states. Given that vibronic ground-state degeneracy in JT models may be seen as a consequence of the electronic Berry phase, and that any JT problem may be obtained from the subset we investigate in this letter by symmetry-breaking, our arguments reveal the fundamental origin of the vibronic ground-state degeneracy of JT models.
Keywords
Cite
@article{arxiv.1706.00039,
title = {Vibronic Ground-state Degeneracies and the Berry Phase: A Continuous Symmetry Perspective},
author = {Raphael F. Ribeiro and Joel Yuen-Zhou},
journal= {arXiv preprint arXiv:1706.00039},
year = {2018}
}