99 citations · 139 across the 9 of their papers we have counts for
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cond-mat.str-el2002★ 3 cited
Antiferromagnetism in the 2D Hubbard model: phase transition and local quantities
Roland Muenzner, Adolfo Avella, Ferdinando Mancini
We present a first study of the antiferromagnetic state in the 2D t-t'-U model at finite temperatures by the composite operator method, providing simultaneously a fully self-consis…
cond-mat.str-el2002
The 2D Mott-Hubbard transition in presence of a parallel magnetic field
A. Avella, F. Mancini
The half-filled two-dimensional Hubbard model in presence of a uniform and static parallel magnetic field has been studied by means of the Composite Operator Method. A fully self-c…
cond-mat.str-el2002★ 8 cited
Non-Ergodicity of the 1D Heisenberg Model
M. Bak, A. Avella, F. Mancini
The relevance of zero-energy functions, coming from zero-energy modes and present in the structure of bosonic Green's functions, is often underestimated. Usually, their values are…