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arXiv · 2502.19195

Higher derivative holography and temperature dependence of QGP viscosities

Thomas Apostolidis·Umut Gürsoy·Edwan Préau
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Abstract

Recent Bayesian analyses of heavy ion collision data have established a non-trivial temperature dependence of the shear and bulk viscosity per entropy. Motivated by this, we consider higher derivative corrections to realistic, bottom-up holographic models of quark-gluon plasma based on five-dimensional Einstein-dilaton theories and determine the dilaton potentials in the higher derivative terms by matching the Bayesian analyses. A byproduct of our analysis is the bulk viscosity that follows from the holographic V-QCD theory. Higher derivative corrections when treated perturbatively lead to tension with existing data. We investigate possible resolutions.

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Thomas Apostolidis, Umut Gürsoy, Edwan Préau. 2025-02-26. Higher derivative holography and temperature dependence of QGP viscosities. https://arxiv.org/abs/2502.19195

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