99 citations · 1.1k across the 76 of their papers we have counts for
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cond-mat.str-el2000★ 13 cited
The 1D Hubbard model within the Composite Operator Method
Adolfo Avella, Ferdinando Mancini, Maria del Mar Sanchez-Lopez
Although effective for two dimensional (2D) systems, some approximations may fail in describing the properties of one-dimensional (1D) models, which belong to a different universal…
cond-mat.stat-mech2000★ 29 cited
Equation of Motion Method for Composite Field Operators
Ferdinando Mancini, Adolfo Avella
The Green's function formalism in Condensed Matter Physics is reviewed within the equation of motion approach. Composite operators and their Green's functions naturally appear as b…