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Displaying similar documents to “Exotic galilean symmetry and non-commutative mechanics.”

Gauge theories on deformed spaces.

Blaschke, Daniel N., Kronberger, Erwin, Sedmik, René I.P., Wohlgenannt, Michael (2010)

SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]

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Symmetries of an extended Hubbard Model

Bianca Cerchiai, Peter Schupp (1997)

Banach Center Publications

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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 S U q ( 2 ) holds as a true quantum symmetry, but only for D=1.