Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficiency fluctuations in quantum thermoelectric devices   We present a method, based on characterizing efficiency fluctuations, to
asses the performance of nanoscale thermoelectric junctions. This method
accounts for effects typically arising in small junctions, namely,
stochasticity in the junction's performance, quantum effects, and
nonequilibrium features preventing a linear response analysis. It is based on a
nonequilibrium Green's function (NEGF) approach, which we use to derive the
full counting statistics (FCS) for heat and work, and which in turn allows us
to calculate the statistical properties of efficiency fluctuations. We simulate
the latter for a variety of simple models where our method is exact. By
analyzing the discrepancies with the semi-classical prediction of a quantum
master equation (QME) approach, we emphasize the quantum nature of efficiency
fluctuations for realistic junction parameters. We finally propose an
approximate Gaussian method to express efficiency fluctuations in terms of
nonequilibrium currents and noises which are experimentally measurable in
molecular junctions.

13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org