Conductivity of interacting spinless fer
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GΓΆtz S. Uhrig
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Article
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1995
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Elsevier Science
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English
β 232 KB
Spinless fermions with repulsion are treated non-perturbatively by classifying the diagrams of the generating functional q~ in powers of the inverse lattice dimension l/d. The equations derived from the first two orders are evaluated on the one-and on the two-particle level. The order parameter of t