Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Delayed-response quantum back-action in nanoelectromechanical systems   We present a semiclassical theory for the delayed response of a quantum dot
(QD) to oscillations of a coupled nanomechanical resonator (NR). We prove that
the back-action of the QD changes both the resonant frequency and the quality
factor of the NR. An increase or decrease in the quality factor of the NR
corresponds to either an enhancement or damping of the oscillations, which can
also be interpreted as Sisyphus amplification or cooling of the NR by the QD.

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The categories of this paper are: hep-th
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The categories of this paper are: gr-qc
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The categories of this paper are: econ
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The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-ex