Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ground state, vibrational spectrum and deterministic transport of a
  chain of charged particles   We study the equilibrium, oscillatory and transport properties of a chain of
charged particles which interact with each other via the Coulomb and power-like
repulsive interactions. Exact, analytical expressions for the energy of the
ground state, interparticle distances, and vibration spectrum are derived, and
the stability criterion for a chain with equidistant particles is established.
We also consider the phenomenon of deterministic transport of a chain in a
ratchet potential subject to a longitudinal alternating electric field.

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The categories of this paper are: physics
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The categories of this paper are: chao-dyn
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-th
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The categories of this paper are: cs
28
The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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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: hep-lat
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph