Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonabelian Bosonic Currents in Cosmic Strings   A nonabelian generalization of the neutral Witten current-carrying string
model is discussed in which the bosonic current-carrier belongs to a two
dimensional representation of SU(2). We find that the current-carrying
solutions can be of three different kinds: either the current spans a U(1)
subgroup, and in which case one is left with an abelian current-carrying
string, or the three currents are all lightlike, travelling in the same
direction (only left or right movers). The third, genuinely nonabelian
situation, cannot be handled within a cylindrically symmetric framework, but
can be shown to depend on all possible string Lorentz invariant quantities that
can be constructed out of the phase gradients.

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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: nlin
1
The categories of this paper are: cs
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The categories of this paper are: adap-org
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The categories of this paper are: plasm-ph