Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fully covariant radiation force on a polarizable particle   The electromagnetic force on a polarizable particle is calculated in a
covariant framework. Local equilibrium temperatures for the electromagnetic
field and the particle's dipole moment are assumed, using a relativistic
formulation of the fluctuation-dissipation theorem. Two examples illustrate
radiative friction forces: a particle moving through a homogeneous radiation
background and above a planar interface. Previous results for arbitrary
relative velocities are recovered in a compact way.

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The categories of this paper are: adap-org
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: supr-con
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The categories of this paper are: gr-qc
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an