99 citations · 152 across the 15 of their papers we have counts for
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Green's Function Formalism for Highly Correlated Systems
Ferdinando Mancini, Adolfo Avella
We present the Composite Operator Method (COM) as a modern approach to the study of strongly correlated electronic systems, based on the equation of motion and Green's function met…
Ergodicity in Strongly Correlated Systems
Adolfo Avella, Ferdinando Mancini, Evgeny Plekhanov
We present a concise, but systematic, review of the ergodicity issue in strongly correlated systems. After giving a brief historical overview, we analyze the issue within the Green…
The charge and spin sectors of the - Hubbard model
Adolfo Avella, Ferdinando Mancini
The charge and spin sectors, which are intimately coupled to the fermionic one, of the - Hubbard model have been computed self-consistently within the two-pole approximation…
Study of the spin- Hubbard-Kondo lattice model by means of the Composite Operator Method
Adolfo Avella, Ferdinando Mancini
We study the spin- Hubbard-Kondo lattice model by means of the Composite Operator Method, after applying a Holstein-Primakov transformation. The spin and particle dynamics…
The Hubbard model: bosonic excitations and zero-frequency constants
Adolfo Avella, Ferdinando Mancini
A fully self-consistent calculation of the bosonic dynamics of the Hubbard model is developed within the Composite Operator Method. From one side we consider a basic set of fermion…
Ergodicity of the extended anisotropic 1D Heisenberg model: response at low temperatures
Evgeny Plekhanov, Adolfo Avella, Ferdinando Mancini
We present the results of exact diagonalization calculations of the isolated and isothermal on-site static susceptibilities in the anisotropic extended Heisenberg model on a linear…