Direct photon production from viscous QGP

Abstract

We simulate direct photon production in evolution of viscous QGP medium. Photons from Compton and annihilation processes are considered. Viscous effect on photon production is very strong and reliable simulation is possible only in a limited $p_T$ range. For minimally viscous fluid $\eta /s$=0.08), direct photons can be reliably computed only up to $p_T\le$ 1.3 GeV. With reduced viscosity ($\eta /s$=0.04), the limit increases to $p_T\le$2GeV.

6 pages, 5 figures

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Cited by in corpus (7)

• Viscous photons in relativistic heavy ion collisions
• Probing the early-time dynamics of relativistic heavy-ion collisions with electromagnetic radiation
• Anisotropy of Low Energy Direct Photons in Relativistic Heavy Ion Collisions
• Lattice QCD estimates of thermal photon production from the QGP
• Gradient Correction to Photon Emission Rate at Strong Coupling
• Second order hydrodynamics based on effective kinetic theory and electromagnetic signals from QGP
• Centrality dependence of low-momentum direct-photon production in Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV