Journal
EUROPHYSICS LETTERS
Volume 56, Issue 4, Pages 563-569Publisher
E D P SCIENCES
DOI: 10.1209/epl/i2001-00557-x
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The Dynamical Cluster Approximation (DCA) is used to study non-local corrections to the dynamical mean-field phase diagram of the two-dimensional Hubbard model. Regions of antiferromagnetic, d-wave superconducting, pseudo-gapped non-Fermi liquid, and Fermi liquid behaviors are found, in rough agreement with the generic phase diagram of the cuprates. The non-local fluctuations beyond the mean field both suppress the antiferromagnetism and mediate the superconductivity.
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