QCD String as an Effective String

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.

Talk: 12pp., 3 figs

References in corpus (2)

• Universal Subleading Spectrum of Effective String Theory
• An interplay between static potential and Reggeon trajectory for QCD string

Cited by in corpus (7)

• The Effective Theory of Long Strings
• Tetraquarks in large-$N_c$ QCD
• Three dimensional finite temperature SU(3) gauge theory near the phase transition
• Heavy Quark Potential from Gauge/Gravity Duality: A Large D Analysis
• Mean field quantization of effective string
• Large-size expansion for triangular Wilson loops in confining gauge theories
• Asymptotic behavior of large polygonal Wilson loops in confining gauge theories