• Cumulant expansion of the periodic Anderson model : general derivation 

      Figueira, M.S.; Foglio, M.E.; Martinez Pino, Gerardo Guido (1994) [Artigo de periódico]
      We extend to the periodic Anderson model (PAM) the diagrammatic expansion in cumulants that was employed by Hubbard to study his model of a narrow band of strongly correlated electrons. The PAM is a lattice of localized ...