ar X iv : c on d - m at / 9 50 50 29 v 1 8 M ay 1 99 5 Electrons , pseudoparticles , and quasiparticles in one - dimensional interacting electronic systems

نویسندگان

  • J. M. P. Carmelo
  • A. H. Castro Neto
  • N. M. R. Peres
چکیده

We find the singular transformation between the electron operator and the pseu-doparticle operators for the Hubbard chain. We generalize the concept of quasiparti-cle to one-dimensional electronic systems which in 1D refers to many-pseudoparticle objects. We obtain explicit results for the electron renormalization factor, self energy, and vertex functions at the Fermi points. We also discuss the possible connection of our results to higher dimensions and explore the possibilities of instabilities in the interacting problem such as the formation of Cooper pairs.

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تاریخ انتشار 1995