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arXiv · hep-th/9902197

Baryons and Flux Tubes in Confining Gauge Theories from Brane Actions

Curtis G. Callan·Alberto Guijosa·Konstantin G. Savvidy·Oyvind Tafjord
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Abstract

We study baryon configurations in large N non-supersymmetric SU(N) gauge theories, applying the AdS/CFT correspondence. Using the D5-brane worldvolume theory in the near-horizon geometry of non-extremal D3-branes, we find embeddings which describe baryonic states in three-dimensional QCD. In particular, we construct solutions corresponding to a baryon made of N quarks, and study what happens when some fraction $ν$ of the total number of quarks are bodily moved to a large spatial separation from the others. The individual clumps of quarks are represented by Born-Infeld string tubes obtained from a D5-brane whose spatial section has topology $R \times S^4$. They are connected by a confining color flux tube, described by a portion of the fivebrane that runs very close and parallel to the horizon. We find that this flux tube has a tension with a nontrivial $ν$-dependence (not previously obtained by other methods). A similar picture is presented for the four-dimensional case.

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Curtis G. Callan, Alberto Guijosa, Konstantin G. Savvidy, Oyvind Tafjord. 1999-03-03. Baryons and Flux Tubes in Confining Gauge Theories from Brane Actions. https://doi.org/10.1016/s0550-3213(99)00312-0

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