## Abstract

For a model describing the motion of a zero-temperature electron gas in an environment causing a fluctuating potential and a fluctuating effective mass, a theory is developed which allows for an approximate calculation of the particle density propagation self-consistently with momentum relaxation and defect-induced tunnelling processes. All correlation functions of the system are expressed in terms of two causal kernels for which non-linear equations are derived and solved. A detailed discussion of the influence of the defect-induced tunnelling on the mobility, in particular on mobility edges, and on the Fermi glass stiffness is given and an anomalous high-frequency tail of the dynamical conductivity is predicted.

Original language | English |
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Article number | 017 |

Pages (from-to) | 981-997 |

Number of pages | 17 |

Journal | Journal of Physics C: Solid State Physics |

Volume | 15 |

Issue number | 5 |

DOIs | |

State | Published - 1982 |