Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mechanical Lamb-shift analogue for the Cooper-pair box   We estimate the correction to the Cooper-pair box energy level splitting due
to the quantum motion of a coupled micromechanical gate electrode. While the
correction due to zero-point motion is very small, it should be possible to
observe thermal motion-induced corrections to the photon-assisted tunneling
current.

1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ex
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The categories of this paper are: math-ph
3
The categories of this paper are: physics
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The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int