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

Sep 25, 2024
42 pages
Published in:
  • Eur.Phys.J.Plus 139 (2024) 11, 1006,
  • Eur.Phys.J.Plus 139 (2024) 1006
  • Published: Nov 20, 2024
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Abstract: (Springer)
Deformations of the AdS5\hbox {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 AdS5\hbox {AdS}_5–Schwarzschild black brane against deformations, there is still a margin for mild deformations which may carry two-loop quantum corrections to gravity, whose implications to the strongly coupled dual field theory are addressed and discussed.
Note:
  • 42 pages, 8 figures