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Hot and Dense QCD Shear Viscosity at (almost) NLO
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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 $\mu=0$.
Forward citations
Cited by 2 Pith papers
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Thermodynamic and transport properties of hot asymmetric nuclear matter within a chiral SU(3) model
Hot asymmetric nuclear matter has lower shear viscosity and higher thermal conductivity when nucleons are dressed by a chiral SU(3) mean field than when treated as a free gas, with isospin asymmetry mainly boosting th...
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What is the Quark-Gluon Plasma made of?
The quark-gluon plasma is best described as a strongly coupled liquid of massive, very short-lived quark and gluon quasiparticles, with sound (phonon) modes becoming the most well-defined collective excitation at low momenta.
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