95 citations · 146 across the 2 of their papers we have counts for
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Enhanced magnetic fluctuations in doped spin-Peierls systems: a single-chain model analysis
M. Fabrizio, R. Mélin
We analyze by means of real space Renormalization Group (RG) as well as by exact diagonalizations the properties of a single-chain model of a doped spin-Peierls system, where a maj…
Impurity in a Luttinger liquid: a numerical study of the finite size energy spectrum and of the orthogonality catastrophe exponent
Shaojin Qin, Michele Fabrizio, Lu Yu
The behavior of a single impurity in a one-dimensional Luttinger liquid is numerically investigated by means of the density matrix renormalization group. By analyzing the finite si…
Interplay of Orbital Degeneracy and Superconductivity in a Molecular Conductor
Michele Fabrizio, Marco Airoldi, Erio Tosatti
We study electron propagation in a molecular lattice model. Each molecular site involves doubly degenerate electronic states coupled to doubly degenerate molecular vibration, leadi…
Electron-phonon coupling close to a metal-insulator transition in one dimension
M. Fabrizio, C. Castellani, C. Di Castro
We consider a one-dimensional system of electrons interacting via a short-range repulsion and coupled to phonons close to the metal-insulator transition at half filling. We argue t…
Anderson-Yuval approach to the multichannel Kondo problem
M. Fabrizio, Alexander O. Gogolin, Ph. Nozières
We analyze the structure of the perturbation expansion of the general multichannel Kondo model with channel anisotropic exchange couplings and in the presence of an external magnet…
Disordered Flat Phase in a Solid on Solid Model of Fcc(110) Surfaces and Dimer States in Quantum Spin-1/2 Chains
Giuseppe Santoro, Michele Fabrizio
We present a restricted solid on solid hamiltonian for fcc (110) surfaces. It is the simplest generalization of the exactly solvable BCSOS model which is able to describe a $(2\tim…