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arXiv · 1206.0922

QCD String as an Effective String

Yuri Makeenko
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Abstract

There are two cases where QCD string is described by an effective theory of long strings: the static potential and meson scattering amplitudes in the Regge regime. I show how the former can be solved in the mean-field approximation, justified by the large number of space-time dimensions, and argue that it turns out to be exact for the Nambu--Goto string. By adding extrinsic curvature I demonstrate how the tachyonic instability of the ground-state energy can be cured by operators less relevant in the infrared.

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Yuri Makeenko. 2012-06-05. QCD String as an Effective String. https://doi.org/10.1142/9789814440349_0018

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