Investigating the temperature dependence of the specific shear viscosity of QCD matter with dilepton radiation

Abstract

This work reports on investigations of the effects on the evolution of viscous hydrodynamics and on the flow coefficients of thermal dileptons, originating from a temperature-dependent specific shear viscosity $\eta /s(T)$ at temperatures beyond 180 MeV formed at the Relativistic Heavy-Ion Collider (RHIC). We show that the elliptic flow of thermal dileptons can resolve the magnitude of $\eta /s$ at the high temperatures, where partonic degrees of freedom become relevant, whereas discriminating between different specific functional forms will likely not be possible at RHIC using this observable.

25 pages, 20 figures

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Cited by in corpus (13)

• Multi-system Bayesian constraints on the transport coefficients of QCD matter
• The Present and Future of QCD
• Transport coefficients of a hot QCD medium and their relative significance in heavy-ion collisions
• Quantum algorithms for transport coefficients in gauge theories
• Exploring the influence of bulk viscosity of QCD on dilepton tomography
• A study of charm quark dynamics in quark-gluon plasma with 3+1 D viscous hydrodynamics
• Holography of the QGP Reynolds Number
• Relativistic second-order viscous hydrodynamics from kinetic theory with extended relaxation-time approximation
• Electromagnetic and weak probes: theory
• Thermal dilepton production in collisional hot QCD medium in the presence of chromo-turbulent fields
• Second order hydrodynamics based on effective kinetic theory and electromagnetic signals from QGP
• Distinguishing the sources of dielectron anisotropic flow at low beam energies
• Bulk viscous effects on flow and dilepton radiation in a hybrid approach