Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Random Scattering Matrices and the Circuit Theory of Andreev
  Conductances   The conductance of a normal-metal mesoscopic system in proximity to
superconducting electrode(s) is calculated. The normal-metal part may have a
general geometry, and is described as a ``circuit'' with ``leads'' and
``junctions''. The junctions are each ascribed a scattering matrix which is
averaged over the circular orthogonal ensemble, using recently-developed
techniques. The results for the electrical conductance reproduce and extend
Nazarov's circuit theory, thus bridging between the scattering and the bulk
approaches. The method is also applied to the heat conductance.

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The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
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The categories of this paper are: stat
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an