Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Kondo physics and orbital degeneracy interact to boost thermoelectrics
  on the nanoscale   We investigate the transport through a nanoscale device consisting of a
degenerate double-orbital Anderson dot coupled to two uncorrelated leads. We
determine the thermoelectric transport properties close to the one-electron
regime and compare them to a corresponding single-orbital dot. The linear and
nonlinear regimes are addressed, the latter via a non-equilibrium
generalization of the non-crossing approximation based on the Keldysh
formalism. Power output and efficiency in the Kondo regime are shown to be
strongly enhanced through the presence of a second orbital. We predict an
experimentally relevant optimal operating point which benefits from the
concomitant increase of the Kondo temperature in the two-orbital setup. An
approximation based on the transport coefficients and fulfilling the
thermodynamic balance is proven to remain appropriate even far beyond the
expected range of validity of such approaches. Finally, the double-orbital
Kondo regime reveals itself as a promising candidate to avoid, at least
partially, the generic dilemma between optimal thermoelectric efficiency on one
hand, and fair power output on the other.

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The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
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The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
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The categories of this paper are: cs
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: physics