Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Studying Critical String Emerging from Non-Abelian Vortex in Four
  Dimensions   Recently a special vortex string was found [5] in a class of soliton vortices
supported in four-dimensional Yang-Mills theories that under certain conditions
can become infinitely thin and can be interpreted as a critical ten-dimensional
string. The appropriate bulk Yang-Mills theory has the U(2) gauge group and the
Fayet-Iliopoulos term. It supports semilocal non-Abelian vortices with the
world-sheet theory for orientational and size moduli described by the weighted
CP(2,2) model. The full target space is R_4\times Y_6 where Y_6 is a
non-compact Calabi-Yau space.
  We study the above vortex string from the standpoint of string theory,
focusing on the massless states in four dimensions. In the generic case all
massless modes are non-normalizable, hence, no massless gravitons or vector
fields are predicted in the physical spectrum. However, at the selfdual point
(at strong coupling) weighted CP(2,2) admits deformation of the complex
structure, resulting in a single massless hypermultiplet in the bulk. We
interpret it as a composite "baryon."

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The categories of this paper are: nlin
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The categories of this paper are: hep-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: cs
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
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The categories of this paper are: hep-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: eess
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The categories of this paper are: cond-mat
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The categories of this paper are: astro-ph
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The categories of this paper are: physics
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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: math-ph