Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non Intercommuting Configurations in the Collisions of Type-I $U(1)$
  Cosmic Strings   It is shown that for small relative angle and kinetic energy two type I
$U(1)$ strings can form bound states upon collision instead of the more
familiar intercommuting configuration. The velocity below which this may happen
is estimated as function of the ratio of the coupling constants in the theory,
crossing angle and initial kinetic energy.

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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: eess
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg