Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonequilibrium Transport through Double Quantum Dots: Exact Results near
  Quantum Critical Point   We study a double quantum dot in the regime where each dot carries a
spin-1/2. This system is described by the 2-impurity Kondo model, having a
non-Fermi liquid fixed point for a critical value of the inter-impurity
coupling. The Hamiltonian describing the vicinity of the critical point,
including the relevant potential scattering perturbations, can be cast in
quadratic form. This allows us to predict a universal scaling function for the
finite temperature nonlinear conductance along the crossover from the critical
point to the surrounding stable fixed points.

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The categories of this paper are: nlin
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The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: physics
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The categories of this paper are: atom-ph
2
The categories of this paper are: math
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The categories of this paper are: plasm-ph