Asymptotically exact solution of a local copper-oxide model

Details Asymptotically exact solution of a local copper-oxide model Asymptotically exact solution of a local copper-oxide model

1994-03-16

arxiv.org/abs/cond-mat/9403059v1

Physics

Condensed Matter

11 pages, 1 postcript figure is appended as self-extracting archive, Revtex 2.0, ICTP preprint 1994

Scientific paper

10.1103/PhysRevLett.72.2474

We present an asymptotically exact solution of a local copper-oxide model abstracted from the multi-band models. The phase diagram is obtained through the renormalization-group analysis of the partition function. In the strong coupling regime, we find an exactly solved line, which crosses the quantum critical point of the mixed valence regime separating two different Fermi-liquid (FL) phases. At this critical point, a many-particle resonance is formed near the chemical potential, and a marginal-FL spectrum can be derived for the spin and charge susceptibilities.

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