Journal
PHYSICAL REVIEW B
Volume 68, Issue 8, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevB.68.085113
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Landau and Luttinger have shown that the properties of so-called Fermi liquids are determined by the Fermi surface of their excitations. The present analysis of mathematics of the Luttinger paper proves that non-Fermi liquids where there are no well-defined excitations and Mott insulators are essentially characterized by the Fermi-surface analog-the Luttinger surface, a feature of particle's propagator.
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