Dilepton production spectrum above Tc with a lattice quark propagator

Abstract

The dilepton production rate from the deconfined medium is analyzed with the photon self-energies constructed from quark propagators obtained by lattice numerical simulation for two values of temperature $T=1.5T_{\mathrm{c}}$ and $3T_{\mathrm{c}}$ above the critical temperature $T_{\mathrm{c}}$. The photon self-energy is calculated by the Schwinger-Dyson equation with the lattice quark propagtor and a vertex function determined so as to satisfy the Ward-Takahashi identity. The obtained dilepton production rate at zero momentum exhibits divergences reflecting van Hove singularity, and is significantly enhanced around $\omega \simeq T$ compared with the rate obtained by the perturbative analysis.

12 pages, 8 figures

References in corpus (7)

• The production of photons in relativistic heavy-ion collisions
• Phase structure of three and four flavor QCD
• Production and Elliptic Flow of Dileptons and Photons in the semi-Quark Gluon Plasma
• Lattice constraints on the thermal photon rate
• Quark spectral properties above Tc from Dyson-Schwinger equations
• Spectral properties of quarks above T_c in quenched lattice QCD
• Spectral properties of massless and massive quarks coupled with massive boson at finite temperature

Cited by in corpus (6)

• QCD at finite temperature and chemical potential from Dyson-Schwinger equations
• Bayesian analysis of quark spectral properties from the Dyson-Schwinger equation
• Dilepton rate and quark number susceptibility with the Gribov action
• In-medium dispersion relations of charmonia studied by maximum entropy method
• Hard Thermal Loop -- theory and applications
• Non-perturbative study of spectral function and its application in Quark Gluon Plasma