The confining trailing string - Archive ouverte HAL
Article Dans Une Revue Journal of High Energy Physics Année : 2014

The confining trailing string

Résumé

We extend the holographic trailing string picture of a heavy quark to the case of a bulk geometry dual to a confining gauge theory. We compute the classical trailing confining string solution for a static as well as a uniformly moving quark. The trailing string is infinitely extended and approaches a confining horizon, situated at a critical value of the radial coordinate, along one of the space-time directions, breaking boundary rotational invariance. We compute the equations for the fluctuations around the classical solutions, which are used to obtain boundary force correlators controlling the Langevin dynamics of the quark. The imaginary part of the correlators has a non-trivial low-frequency limit, which gives rise to a viscous friction coefficient induced by the confining vacuum. The vacuum correlators are used to define finite-temperature dressed Langevin correlators with an appropriate high-frequency behavior.
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hal-02545564 , version 1 (05-09-2024)

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Elias Kiritsis, Liuba Mazzanti, Francesco Nitti. The confining trailing string. Journal of High Energy Physics, 2014, 02, pp.081. ⟨10.1007/JHEP02(2014)081⟩. ⟨hal-02545564⟩
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