Viscous photons in relativistic heavy ion collisions

Abstract

Theoretical studies of the production of real thermal photons in relativistic heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) are performed. The space-time evolution of the colliding system is modelled using MUSIC, a 3+1D relativistic hydrodynamic simulation, using both its ideal and viscous versions. The inclusive spectrum and its azimuthal angular anisotropy are studied separately, and the relative contributions of the different photon sources are highlighted. It is shown that the photon v2 coefficient is especially sensitive to the details of the microscopic dynamics like the equation of state, the ratio of shear viscosity over entropy density, eta/s, and to the morphology of the initial state.

15 pages, 12 figures. References updated and discussion added

References in corpus (14)

• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• Viscosity Information from Relativistic Nuclear Collisions: How Perfect is the Fluid Observed at RHIC?
• Relativistic viscous hydrodynamics, conformal invariance, and holography
• Elliptic and triangular flow in event-by-event (3+1)D viscous hydrodynamics
• Beyond eta/s = 1/4pi
• Anisotropic flow in sqrt(s)=2.76 TeV Pb+Pb collisions at the LHC
• Event-by-event hydrodynamics and elliptic flow from fluctuating initial state
• Systematic parameter study of hadron spectra and elliptic flow from viscous hydrodynamic simulations of Au+Au collisions at sqrt(s_NN) = 200 GeV
• Electromagnetic radiation from nuclear collisions at RHIC energies
• Photon production from an anisotropic quark-gluon plasma
• Enhancement of thermal photon production in event-by-event hydrodynamics
• A sticky business: the status of the conjectured viscosity/entropy density bound
• Thermal photons in QGP and non-ideal effects
• Elliptic flow of thermal photons and dileptons

Cited by in corpus (73)

• Hydrodynamic Modeling of Heavy-Ion Collisions
• The production of photons in relativistic heavy-ion collisions
• Higher flow harmonics from (3+1)D event-by-event viscous hydrodynamics
• Direct photon production in Pb-Pb collisions at $\sqrt{s_\rm{NN}}$ = 2.76 TeV
• Initial State Fluctuations and Final State Correlations in Relativistic Heavy-Ion Collisions
• Effective QCD and transport description of dilepton and photon production in heavy-ion collisions and elementary processes
• Thermal photons as a quark-gluon plasma thermometer revisited
• Highly-anisotropic hydrodynamics in 3+1 space-time dimensions
• Collectivity and electromagnetic radiation in small systems
• Azimuthally anisotropic emission of low-momentum direct photons in Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Pseudo-Critical Enhancement of Thermal Photons in Relativistic Heavy-Ion Collisions
• Production and Elliptic Flow of Dileptons and Photons in the semi-Quark Gluon Plasma
• Centrality dependence of the direct photon yield and elliptic flow in heavy-ion collisions at sqrt(s)=200 GeV
• Hadronic and partonic sources of direct photons in relativistic heavy-ion collisions
• Theoretical and Experimental Constraints for the Equation of State of Dense and Hot Matter
• Anisotropic flow of thermal photons as a quark-gluon plasma viscometer
• Dilepton emission in high-energy heavy-ion collisions with viscous hydrodynamics
• Elliptic flow of thermal photons from event-by-event hydrodynamic model
• MARTINI for heavy quarks: initialization, parton evolution, and hadronization with event generation
• Elliptic flow from thermal photons with magnetic field in holography
• Hydrodynamics at RHIC and LHC: What have we learned?
• Anisotropy of photon production: Initial eccentricity or magnetic field
• Thermal photon $v_2$ with slow quark chemical equilibration
• Photon elliptic flow in relativistic heavy-ion collisions: hadronic versus partonic sources
• Beam-energy and centrality dependence of direct-photon emission from ultra-relativistic heavy-ion collisions
• Direct photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Universal Parametrization of Thermal Photon Rates in Hadronic Matter
• Ellipticity of photon emission from strongly magnetized hot QCD plasma
• Electrical conductivity of the quark-gluon plasma and soft photon spectrum in heavy-ion collisions
• Photon Emission from a Momentum Anisotropic Quark-Gluon Plasma
• Collision centrality and ${\tau }_0$ dependence of the emission of thermal photons from fluctuating initial state in ideal hydrodynamic calculation
• Thermal photon radiation in high multiplicity p+Pb collisions at the Large Hadron Collider
• Thermal photon and dilepton production and electric charge transport in a baryon rich strongly coupled QGP from holography
• Flows and polarization of early photons with magnetic field at strong coupling
• Electromagnetic radiation as a probe of the initial state and of viscous dynamics in relativistic nuclear collisions
• Photon production from a non-equilibrium quark-gluon plasma
• Dilepton production from the quark-gluon plasma using (3+1)-dimensional anisotropic dissipative hydrodynamics
• Holographic Photon Production in Heavy Ion Collisions
• A Tale of Tails: Photon Rates and Flow in Ultra-Relativistic Heavy Ion Collisions
• Thermal photon emission from the pi-rho-omega system
• MUSIC with the UrQMD Afterburner
• Photon emission from quark-gluon plasma out of equilibrium
• Photon production and elliptic flow from momentum-anisotropic quark-gluon plasma
• Probing the early-time dynamics of relativistic heavy-ion collisions with electromagnetic radiation
• Benchmarking a Non-Equilibrium Approach to Photon Emission in Relativistic Heavy-Ion Collisions
• Energy, centrality and momentum dependence of dielectron production at collider energies in a coarse-grained transport approach
• Prompt, pre-equilibrium, and thermal photons in relativistic nuclear collisions
• Nonprompt direct-photon production in Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Anisotropic flow of thermal photons at RHIC and LHC
• Initial state fluctuations and final state correlations: Status and open questions
• Phenomenology of photon and di-lepton production in relativistic nuclear collisions
• Spectra and elliptic flow of thermal photons from full overlap U+U collisions at RHIC
• Photon production from Pb+Pb collisions at {$\sqrt{s_{\mathrm{NN}}}$} = 5.02 TeV at LHC and at {$\sqrt{s_{\mathrm{NN}}}$} = 39 TeV at FCC
• Photons from thermalizing matter in heavy ion collisions
• Quark self-energy in an ellipsoidally anisotropic quark-gluon plasma
• Update on Chiral Symmetry Restoration in the Context of Dilepton Data
• Effective distributions of quasi-particles for thermal photons
• Electromagnetic fingerprints of the Little Bang
• Effect of an electromagnetic field on the spectra and elliptic flow of particles
• Dilepton production in high energy heavy ion collisions with 3+1D relativistic viscous hydrodynamics
• Recent developments in the theory of electromagnetic probes in relativistic heavy-ion collisions
• Direct Photons in Hydrodynamic Modeling of Relativistic Nuclear Collisions
• Scaling properties of direct photon yields in heavy ion collisions
• Electromagnetic Radiation from QCD Matter: Theory Overview
• Photon Emission from a Medium-Modified Shower Evolution
• Hydrodynamical corrections to electromagnetic emissivities in QCD
• Shear Viscosities of Photons in Strongly Coupled Plasmas
• Photon and dilepton emission anisotropy for a magnetized quark-gluon plasma
• Gradient Correction to Photon Emission Rate at Strong Coupling
• Theory of Soft Electromagnetic Emission in Heavy-Ion Collisions
• A background for thermal photons in heavy ion collisions
• Event-by-Event Observables and Fluctuations
• Rotating synchrotron radiation: Photon emission from magnetized and rotating quark-gluon plasma