Holographic Photon Production and Anisotropic Flow

2016/12/14 by Ioannis Iatrakis, Elias Kiritsis, Iatrakis, Ioannis +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Nuclear Theory (nucl-th) #hep-ph #hep-th #nucl-th

paper · pdf · doi:10.48550/arxiv.1612.05114

4 pages, 4 figures, proceeding for Hard Probes 2016, parallel talk presented by D.-L. Yang. Modifications of authors' affiliations. arXiv admin note: text overlap with arXiv:1611.04848

arxiv created 2016/12/16 · arxiv updated 2016/12/19

Abstract

The thermal-photon emission from strongly coupled gauge theories at finite temperature via the bottom-up models in holographic QCD in the deconfined phase is studied. The models are constructed to approximately reproduce the electric conductivity obtained from lattice simulations for the quark gluon plasma (QGP). The emission rates are then embedded in hydrodynamic simulations combined with prompt photons and hadronic contributions to analyze the spectra and anisotropic flow of direct photons in RHIC and LHC. In general, the holographic models enhance the yield and improve the agreement in spectra, while they reduce the flow in low p_T and increase it in high p_T.

Related

• Temperature derivative divergence of the electric conductivity and thermal photon emission rate at the critical end point from holography
• Probing the pattern of holographic thermalization with photons
• Production of Prompt Photons and Dileptons in Rapid Holographic Thermalization
• QGP probes from a dynamical holographic model of AdS/QCD
• Thermal Radiation from an Analytic Hydrodynamic Model with Hadronic and QGP Sources in Heavy-Ion Collisions