https://doi.org/10.1140/epjp/s13360-024-05795-8
Regular Article
Deformations of the AdS–Schwarzschild black brane and the shear viscosity of the quark–gluon plasma
Center of Mathematics, Federal University of ABC, 09210-580, Santo André, Brazil
Received:
9
October
2024
Accepted:
2
November
2024
Published online:
20
November
2024
Deformations of the 
–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 –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.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
