Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transport in topologically disordered one-particle, tight-binding models   We aim at quantitatively determining transport parameters like conductivity,
mean free path, etc., for simple models of spatially completely disordered
quantum systems, comparable to the systems which are sometimes referred to as
Lifshitz models. While some low-energy eigenstates in such models always show
Anderson localization, we focus on models for which most states of the full
spectrum are delocalized, i.e., on the metallic regime. For the latter we
determine transport parameters in the limit of high temperatures and low
fillings using linear response theory. The Einstein relation (proportionality
of conductivity and diffusion coefficient) is addressed numerically and
analytically and found to hold. Furthermore, we find the transport behavior for
some models to be in accord with a Boltzmann equation, i.e., rather long mean
free paths, exponentially decaying currents, while this does not apply to other
models even though they are also almost completely delocalized.

26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg