Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Radiation and Dynamics of Nanoparticle in Equilibrium Background
  Radiation upon Translational-Rotational Motion   We have obtained general expressions for the intensity of radiation and
tangential force of a small polarizable particle in the process of
translational-rotational motion in equilibrium radiation background
(thermalized photon gas) of certain temperature at an arbitrary relative
orientation of the linear and angular velocity vectors. It is shown that in
cold vacuum background the translational velocity of particle is independent of
time and the intensity of its spontaneous emission is determined by the angular
velocity and imaginary part of the polarizability.

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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin