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arXiv · hep-th/0602255

Dynamics of Flux Tubes in Large N Gauge Theories

I. R. Klebanov·J. Maldacena·C. B. Thorn
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Abstract

The gluonic field created by a static quark anti-quark pair is described via the AdS/CFT correspondence by a string connecting the pair which is located on the boundary of AdS. Thus the gluonic field in a strongly coupled large N CFT has a stringy spectrum of excitations. We trace the stability of these excitations to a combination of large N suppressions and energy conservation. Comparison of the physics of the N=infinity flux tube in the {\cal N}=4 SYM theory at weak and strong coupling shows that the excitations are present only above a certain critical coupling. The density of states of a highly excited string with a fold reaching towards the horizon of AdS is in exact agreement at strong coupling with that of the near-threshold states found in a ladder diagram model of the weak-strong coupling transition. We also study large distance correlations of local operators with a Wilson loop, and show that the fall off at weak coupling and N=infinity (i.e. strictly planar diagrams) matches the strong coupling predictions given by the AdS/CFT correspondence, rather than those of a weakly coupled U(1) gauge theory.

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I. R. Klebanov, J. Maldacena, C. B. Thorn. 2006-06-09. Dynamics of Flux Tubes in Large N Gauge Theories. https://doi.org/10.1088/1126-6708%2F2006%2F04%2F024

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