448 citations · 2.2k across the 37 of their papers we have counts for
6 papers · 1 filter
Metallic Phase and Metal-insulator Transition in 2d Electronic Systems
C. Castellani, C. Di Castro, P. A. Lee
The recent experimental observation of a metal-insulator transition in two dimensions prompts a re-examination of the theory of disordered interacting systems. We argue that the ex…
d-wave superconductivity near charge instabilities
A. Perali, C. Castellani, C. Di Castro +1
We investigate the symmetry of the superconducting order parameter in the proximity of a phase-separation or of an incommensurate charge-density-wave instability. The attractive ef…
Charge-density-waves and superconductivity as an alternative to phase separation in the infinite-U Hubbard-Holstein model
F. Becca, M. Tarquini, M. Grilli +1
We investigate the density instabilities present in the infinite-U Hubbard-Holstein model both at zero and finite momenta as well as the occurrence of Cooper instabilities with a s…
Infrared Behavior of Interacting Bosons at Zero Temperature
C. Castellani, C. Di Castro, F. Pistolesi +1
We exploit the symmetries associated with the stability of the superfluid phase to solve the long-standing problem of interacting bosons in the presence of a condensate at zero tem…
Singular quasiparticle scattering in the proximity of charge instabilities
C. Castellani, C. Di Castro, M. Grilli
We analyze the behavior of the dynamic scattering amplitude between Fermi liquid quasiparticles at the Fermi surface in the proximity of a charge instability, which may occur in th…
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…