Electromagnetic radiation as a probe of the initial state and of viscous dynamics in relativistic nuclear collisions

Abstract

The penetrating nature of electromagnetic signals makes them suitable probes to explore the properties of the strongly-interacting medium created in relativistic nuclear collisions. We examine the effects of the initial conditions and shear relaxation time on the spectra and flow coefficients of electromagnetic probes, using an event-by-event 3+1D viscous hydrodynamic simulation (MUSIC).

14 pages, 14 figures; v2: minor improvements to text

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• Effect of an electromagnetic field on the spectra and elliptic flow of particles
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• Departure from Equilibrium of the Quasi-Particle Distribution Functions in High Energy Nuclear Collisions
• Hydrodynamical corrections to electromagnetic emissivities in QCD
• Multimessenger study of baryon-charged QCD matter in heavy-ion collisions
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• Distinguishing the sources of dielectron anisotropic flow at low beam energies
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• Finite-Density Dynamics of Chemically Equilibrating QGP in Conformal Gubser Flow and Hard Thermal Photon Production
• Hydrodynamic model of heavy-ion collisions with low momentum components