• Corpus ID: 119344675

Hopping with time-dependent disorder

  title={Hopping with time-dependent disorder},
  author={G.C.Ferrario and V.G.Benza},
We determine the propagation properties of a quantum particle in a d-dimensional lattice with hopping disorder, delta-correlated in time. The system is delocalized: the averaged transition probability shows a diffusive behavior. Then, superimposed to the disorder, we consider a bias favouring the motion with a given orientation, as in the dynamics of flux lines in superconductors. The result is an effective Liouvillian for the density matrix, which is characterized by competition between single…