Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum Mechanical Heat Transport in Disordered Harmonic Chains   We investigate the mechanism of heat conduction in ordered and disordered
harmonic onedimensional chains within the quantum mechanical Langevin method.
In the case of the disordered chains we find indications for normal heat
conduction which means that there is a finite temperature gradient but we
cannot clearly decide whether the heat resistance increases linearly with the
chain length. Furthermore we observe characteristic quantum mechanical features
like Bose-Einstein statistics of the occupation numbers of the normal modes,
freezing of the heat conductivity and the influence of the entanglement within
the chain on the current. For the ordered chain we recover some classical
results like a vanishing temperature gradient and a heat flux independent of
the length of the chain.

2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys