Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Current noise and Coulomb effects in superconducting contacts   We derive an effective action for contacts between superconducting terminals
with arbitrary transmission distribution of conducting channels. In the case of
normal-superconducting (NS) contacts we evaluate interaction correction to
Andreev conductance and demonstrate a close relation between Coulomb effects
and shot noise in these systems. In the case of superconducting (SS) contacts
we derive the electron-electron interaction correction to the Josephson
current. At $T=0$ both corrections are found to vanish for fully transparent NS
and SS contacts indicating the absence of Coulomb effects in this limit.

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The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con