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arXiv · 2408.00524

Hot and Dense QCD Shear Viscosity at (almost) NLO

Isabella Danhoni·Guy D. Moore
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Abstract

The next-to-leading order weak-coupling shear viscosity of QCD was computed 6 years ago. However, these results have never been applied at finite baryon chemical potential $\mu$, even though intermediate-energy heavy ion collisions and merging neutron stars may explore the Quark-Gluon Plasma in a regime where baryon chemical potentials are large. Here, we extend the next-to-leading order shear viscosity calculations to finite $\mu$, and we show that, while the convergence of the weak-coupling expansion is questionable for achievable plasmas, it is somewhat better at $\mu > T$ than at $\mu=0$.

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Isabella Danhoni, Guy D. Moore. 2024-08-01. Hot and Dense QCD Shear Viscosity at (almost) NLO. https://arxiv.org/abs/2408.00524

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