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cond-mat1998★ 3 cited
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…
cond-mat1998★ 8 cited
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…