Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charged black points in General Relativity coupled to the logarithmic
  $U(1)$ gauge theory   The exact solution for a static spherically symmetric field outside a charged
point particle is found in a non-linear $U(1)$ gauge theory with a logarithmic
Lagrangian. The electromagnetic self-mass is finite, and for a particular
relation between mass, charge, and the value of the non-linearity coupling
constant, $\lambda$, the electromagnetic contribution to the Schwarzschild mass
is equal to the total mass. If we also require that the singularity at the
origin be hidden behind a horizon, the mass is fixed to be slightly less than
the charge. This object is a {\em black point.}

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The categories of this paper are: cond-mat
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The categories of this paper are: math
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ph
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The categories of this paper are: eess
34
The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: nlin
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The categories of this paper are: cs
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The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph