2017/09/30 by Sigtryggur Hauksson, Sangyong Jeon, Charles Gale
Physics and Astronomy · #Annihilation #Bremsstrahlung #High-Energy Particle Collisions Research #Isotropy #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Plasma #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #Quark #Quark–gluon plasma #Scattering #Strange matter #Thermal equilibrium #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevc.97.014901
published as Phys. Rev. C 97, 014901 (2018) · Discussion of photon rate at higher anisotropy extended, typos corrected, referenced added, published version
arxiv created 2018/01/09 · openalex publication_date 2018/01/10 · arxiv updated 2018/01/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The photon emission from a nonequilibrium quark-gluon plasma is analyzed. We derive an integral equation that describes photon production through quark-antiquark annihilation and quark bremsstrahlung. It includes coherence between different scattering sites, also known as the Landau-Pomeranchuk-Migdal effect. These leading-order processes are studied for the first time together in an out-of-equilibrium field theoretical treatment that enables the inclusion of viscous corrections to the calculation of electromagnetic emission rates. In the special case of an isotropic, viscous, plasma the integral equation only depends on three constants, which capture the nonequilibrium nature of the medium.