32 citations · 97 across the 5 of their papers we have counts for
5 papers
Optical absorption and activated transport in polaronic systems
G. Schubert, G. Wellein, A. Weiße +2
We present exact results for the optical response in the one-dimensional Holstein model. In particular, by means of a refined kernel polynomial method, we calculate the ac and dc e…
Optical response of electrons in a random potential
Alexander Weisse, Gerald Schubert, Holger Fehske
Using our recently developed Chebyshev expansion technique for finite-temperature dynamical correlation functions we numerically study the AC conductivity of the Anderson mo…
Unusual localisation effects in quantum percolation
Gerald Schubert, Alexander Weisse, Holger Fehske
We present a detailed study of the quantum site percolation problem on simple cubic lattices, thereby focussing on the statistics of the local density of states and the spatial str…
Delocalisation transition in chains with correlated disorder
Gerald Schubert, Alexander Weisse, Holger Fehske
We show that in the one-dimensional (1D) Anderson model long-range correlations within the sequence of on-site potentials may lead to a region of extended states in the vicinity of…
Characterisation of Anderson localisation using distributions
A. Alvermann, G. Schubert, A. Weisse +2
We examine the use of distributions in numerical treatments of Anderson localisation and supply evidence that treating exponential localisation on Bethe lattices recovers the overa…