Thermal spectra can be produced by certain classes of emission kernels without probe thermalization, as when the differential cross section depends on angle but not on the Mandelstam variable s, providing a kernel-based criterion to distinguish genuine equilibrium from kernel artifacts.
Photon Emission from Quark-Gluon Plasma: Complete Leading Order Results
7 Pith papers cite this work. Polarity classification is still indexing.
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abstract
We compute the photon emission rate of an equilibrated, hot QCD plasma at zero chemical potential, to leading order in both alpha_{EM} and the QCD coupling g_s(T). This requires inclusion of near-collinear bremsstrahlung and inelastic pair annihilation contributions, and correct incorporation of Landau-Pomeranchuk-Migdal suppression effects for these processes. Analogous results for a QED plasma are also included.
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Models chemical non-equilibrium in finite-density QGP under conformal Gubser flow and its impact on hard thermal photon production, finding delayed equilibration with quarks lagging gluons, suppressed total yield but enhanced early high-pT photons, and distinct temporal emission structure.
Relative-angle modes of pair correlations produce sign-changing modifications to the in-medium photon spectrum with magnitudes comparable to the factorized contribution.
Thermal dilepton polarization in LHC heavy-ion collisions is sensitive to QGP in-medium properties, with a one-to-one mapping derived between dielectron and dimuon channels.
Including thermal parton collisions via the BGK kernel increases the collisional energy loss of a heavy quark in QGP by ~8% at large velocities for α_s=0.3 compared to the collisionless limit.
Early matter domination with time-dependent decay rates produces multiple first-order phase transitions whose gravitational wave signatures encode the transition and reheating temperatures.
An analytic hydrodynamic model with QGP and hadronic photon sources reproduces measured non-prompt direct photon spectra in 200 GeV Au+Au collisions and extracts centrality-dependent initial temperatures.
citing papers explorer
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Thermal Spectra Without Detailed Balance
Thermal spectra can be produced by certain classes of emission kernels without probe thermalization, as when the differential cross section depends on angle but not on the Mandelstam variable s, providing a kernel-based criterion to distinguish genuine equilibrium from kernel artifacts.
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Finite-Density Dynamics of Chemically Equilibrating QGP in Conformal Gubser Flow and Hard Thermal Photon Production
Models chemical non-equilibrium in finite-density QGP under conformal Gubser flow and its impact on hard thermal photon production, finding delayed equilibration with quarks lagging gluons, suppressed total yield but enhanced early high-pT photons, and distinct temporal emission structure.
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Probing Pair Correlations in QCD Matter with Photon Spectra
Relative-angle modes of pair correlations produce sign-changing modifications to the in-medium photon spectrum with magnitudes comparable to the factorized contribution.
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The polarization of thermal dileptons emitted in high-energy heavy-ion collisions
Thermal dilepton polarization in LHC heavy-ion collisions is sensitive to QGP in-medium properties, with a one-to-one mapping derived between dielectron and dimuon channels.
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Energy Loss of a Heavy Quark in a Collisional Quark-Gluon Plasma
Including thermal parton collisions via the BGK kernel increases the collisional energy loss of a heavy quark in QGP by ~8% at large velocities for α_s=0.3 compared to the collisionless limit.
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Gravitational Waves from Multiple First-Order Phase Transitions in a Scenario with Early Matter Domination
Early matter domination with time-dependent decay rates produces multiple first-order phase transitions whose gravitational wave signatures encode the transition and reheating temperatures.
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Thermal Radiation from an Analytic Hydrodynamic Model with Hadronic and QGP Sources in Heavy-Ion Collisions
An analytic hydrodynamic model with QGP and hadronic photon sources reproduces measured non-prompt direct photon spectra in 200 GeV Au+Au collisions and extracts centrality-dependent initial temperatures.