Dilepton production from hot hadronic matter in nonequilibrium

Abstract

The influence of time dependent medium modifications of low mass vector mesons on dilepton yields is investigated within a nonequilibrium quantum field theoretical description on the basis of the Kadanoff-Baym equations. Time scales for the adaption of the spectral properties to changing self energies are given and, under use of a model for the fireball evolution, nonequilibrium dilepton yields from the decay of rho- and omega-mesons are calculated. In a comparison of these yields with those from calculations that assume instantaneous (Markovian) adaption to the changing medium, quantum mechanical memory effects turn out to be important.

25 pages, 20 figures, accepted version for publication in Phys.Rev.C

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• Hadrons in strongly interacting matter
• Thermal Dileptons from Coarse-Grained Transport as Fireball Probes at SIS Energies
• Dilepton production and reaction dynamics in heavy-ion collisions at SIS energies from coarse-grained transport simulations
• A coarse-graining approach for dilepton production at SPS energies
• Photon and dilepton production at the Facility for Antiproton and Ion Research and the beam energy scan program at the Relativistic Heavy-Ion Collider using coarse-grained microscopic transport simulations
• Exploring the influence of bulk viscosity of QCD on dilepton tomography
• Dilepton yields from Brown-Rho scaled vector mesons including memory effects
• Energy, centrality and momentum dependence of dielectron production at collider energies in a coarse-grained transport approach
• Collective Phenomena in the Non-Equilibrium Quark-Gluon Plasma
• Thermal, chemical and spectral equilibration in heavy-ion collisions
• Nonlocal Form of Quantum Off-Shell Kinetic Equation
• What does the rho-meson do? In-medium mass shift scenarios versus hadronic model calculations
• Memory effects in radiative jet energy loss
• Hadrons in Medium
• Off-equilibrium photon production during the chiral phase transition
• Kinetics of the chiral phase transition in a quark-meson $\sigma$-model
• Electromagnetic probes in heavy-ion collisions: Messengers from the hot and dense phase
• Vector Meson Spectral Functions in a Coarse-Graining Approach
• Dileptons in a coarse-grained transport approach
• Non-equilibrium photon production arising from the chiral mass shift