The Hamiltonian for an extended Hubbard model with phonons as introduced by A. Montorsi and M. Rasetti is considered on a D-dimensional lattice. The symmetries of the model are studied in various cases. It is shown that for a certain choice of the parameters a superconducting holds as a true quantum symmetry, but only for D=1.
@article{bwmeta1.element.bwnjournal-article-bcpv40z1p361bwm,
author = {Cerchiai, Bianca and Schupp, Peter},
title = {Symmetries of an extended Hubbard Model},
journal = {Banach Center Publications},
volume = {38},
year = {1997},
pages = {361-368},
zbl = {0872.17028},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-bcpv40z1p361bwm}
}
Cerchiai, Bianca; Schupp, Peter. Symmetries of an extended Hubbard Model. Banach Center Publications, Tome 38 (1997) pp. 361-368. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-bcpv40z1p361bwm/
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