Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Correlations of spin currents through a quantum dot induced by the Kondo
  effect   We study correlations of spin currents flowing through a Coulomb blockaded
quantum dot. While vanishing for elastic co-tunneling, these correlations
develop as the quantum dot enters the Kondo regime. They are a manifestation of
Kondo physics in quantum dots. We demonstrate that the spin current correlator
is non-perturbative in the Kondo coupling.

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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: math
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The categories of this paper are: supr-con
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The categories of this paper are: econ
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The categories of this paper are: astro-ph
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The categories of this paper are: nlin
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The categories of this paper are: cmp-lg
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The categories of this paper are: plasm-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th