FM 2000-7      mp_arc@math.utexas.edu \# NO
                chao-dyn@xyz.lanl.gov  \# NO

Authors: Guido Gentile, Vieri Mastropietro

Title: Anderson Localization for the Holstein model

Abstract: A one-dimensional system of electrons on a lattice,
    interacting with a periodic potential, with period incommensurate
    with the lattice spacing and satisfying a Diophantine condition,
    is considered in the case of strong interaction.
    The Schwinger functions are computed and their asymptotic
    behaviour is studied, proving Anderson localization.
    The decay of the Schwinger functions is shown to depend
    critically on the value of the chemical potential.

Keywords: Anderson localization, Holstein model,
quasiperiodic potential, Schwinger funtions

Addresses:

G.G.: Matematica, Universita' di Roma 3,
        Largo S. Leonardo Murialdo, 1, 00146, Roma, Italia
V.M.: Matematica, Universita' di Roma 2,
        Viale della Ricerca Scientifica, 00133, Roma, Italia.

e-mail: mastropi@mat.uniroma2.it
        gentile@matrm3.mat.uniroma3.it