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arXiv · 2409.17325

Deformations of the AdS-Schwarzschild black brane and the shear viscosity of the quark-gluon plasma

Roldao da Rocha
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Abstract

Deformations of the AdS$_5$-Schwarzschild black brane, implemented in the AdS/CFT membrane paradigm, are scrutinized in the dual viscous hydrodynamic infrared limit. The latest experimental data analyses, regarding the shear viscosity-to-entropy density ratio of the quark-gluon plasma produced by heavy-ion collisions at the LHC and RHIC, are shown to constrain these deformations severely. Although corroborating with the robustness of the standard AdS$_5$-Schwarzschild black brane against deformations, there is still a margin for mild deformations which may carry 2-loop quantum corrections to gravity, whose implications to the strongly-coupled dual field theory are addressed and discussed.

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Roldao da Rocha. 2024-09-25. Deformations of the AdS-Schwarzschild black brane and the shear viscosity of the quark-gluon plasma. https://doi.org/10.1140/epjp/s13360-024-05795-8

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