46 citations · 120 across the 11 of their papers we have counts for
11 papers
Interpolative Approach for Solving Quantum Impurity Model Based on the Slave--Boson Mean--Field Approximation
V. Oudovenko, K. Haule, S. Y. Savrasov +2
A rational representation for the self-energy is explored to interpolate the solution of the Anderson impurity model in general orbitally degenerate case. Several constrains such a…
Frequency content and autocorrelation function of noisy periodic signals
D. Villani, R. M. Ghigliazza, R. Carmona
We extract the frequency content of a noisy signal by use of Discrete Fourier Transform. Our analysis overcomes the limitations imposed by incommensurate lattices. After computing…
Two-scale analysis of the SU(N) Kondo Model
D. Villani, E. Lange, A. Avella +1
We show how to resolve coherent low-energy features embedded in a broad high-energy background by use of a fully self-consistent calculation for composite particle operators. The m…
The Conductivity Tensor for the Hubbard Model
F. Mancini, D. Villani
A new theoretical analysis of the current-charge and charge-charge propagators is presented for the Hubbard model, using the static approximation for the Composite Operator Method.…
Comment on "Symmetry properties of magnetization in the Hubbard model at finite temperature"
A. Avella, F. Mancini, D. Villani
The results of G. Su and M. Suzuki [Phys. Rev. B 54, 8291 (1996); ibidem 57, 13367 (1998)] for the spin and pseudo-spin symmetry properties of the Hubbard model are reexamined. We…
Thermodynamics of the 2D Hubbard model
F. Mancini, D. Villani, H. Matsumoto
A theoretical analysis of the thermodynamic response functions of the 2D single-band Hubbard model is realized by means of the composite operator method. It is shown that all the f…