47 citations · 77 across the 7 of their papers we have counts for
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Excitation spectrum of the two-dimensional attractive Hubbard model
Massimiliano Capezzali, Hans Beck
We calculate the one-particle spectral functions above the superconducting transition temperature , in the framework of a functional integral approach. The coupling of the e…
Pseudogap in the one-electron spectral functions of the attractive Hubbard model
Massimiliano Capezzali, Hans Beck
We calculate the one-electron Green's function of the 2D attractive Hubbard model by coupling the electrons to pair fluctuations. The latter are approximated by homogeneous amplitu…
One-Electron Spectral Functions of the Attractive Hubbard Model for Intermediate Coupling
Maxim Yu. Kagan, Raymond Frésard, Massimiliano Capezzali +1
We calculate the one-electron spectral function of the attractive (negative-) Hubbard model. We work in the intermediate coupling and low density regime and obtain the self-ener…
Screening effects in superconductors
Massimiliano Capezzali, Daniel Ariosa, Hans Beck
The partition function of the Hubbard model with local attraction and long range Coulomb repulsion between electrons is written as a functional integral with an action involvin…