Higher derivative holography and temperature dependence of QGP viscosities
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| Format: | Preprint |
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2025
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| _version_ | 1866917029776195584 |
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| author | Apostolidis, Thomas Gürsoy, Umut Préau, Edwan |
| author_facet | Apostolidis, Thomas Gürsoy, Umut Préau, Edwan |
| contents | 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. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2502_19195 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Higher derivative holography and temperature dependence of QGP viscosities Apostolidis, Thomas Gürsoy, Umut Préau, Edwan High Energy Physics - Theory High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Theory 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. |
| title | Higher derivative holography and temperature dependence of QGP viscosities |
| topic | High Energy Physics - Theory High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2502.19195 |