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cond-mat.str-el2004
Slave-rotor mean field theories of strongly correlated systems and the Mott transition in finite dimensions
Serge Florens, Antoine Georges
The multiorbital Hubbard model is expressed in terms of quantum phase variables (``slave rotors'') conjugate to the local charge, and of auxiliary fermions, providing an economical…
cond-mat.str-el2004
Singular dynamics and pseudogap formation in the underscreened Kondo impurity and Kondo lattice models
Serge Florens
We study a generalization of the Kondo model in which the impurity spin is represented by Abrikosov fermions in a rotation group SU(P) larger than the SU(N) group associated to the…