The Fermi edge singularity in the SU(N) Wolff model

Details The Fermi edge singularity in the SU(N) Wolff model The Fermi edge singularity in the SU(N) Wolff model

2005-09-15

arxiv.org/abs/cond-mat/0509407v1

Phys. Rev. B 73, 125113 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 4 figures

Scientific paper

10.1103/PhysRevB.73.125113

The low temperature properties of the SU(N) Wolff impurity model are studied via Abelian bosonization. The path integral treatment of the problem allows for an exact evaluation of low temperature properties of the model. The single particle Green's function enhances due to the presence of local correlation. The basic correlation function such as the charge or spin correlator are also influenced by the presence of impurity, and show local Fermi liquid behaviour. The X-ray absorption is affected by the presence of local Hubbard interaction. The exponent is decreased (increased) for repulsive (attractive) interactions.

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