Speaker
Frithjof Karsch
(Brookhaven National Laboratory and Bielefeld University)
Description
We report on a continuum extrapolation of the vector current
correlation function for light valence quarks in the deconfined phase
of quenched QCD. The vector meson correlator is calculated at
T=1.5 Tc at four values of the cut-off on lattices up to size
128^3x48. We determine the first three, non-vanishing thermal
moments of the vector meson spectral function. We find that
ratios of thermal moments agree with those for free, massless
quarks within 1% accuracy, while the correlator at the midpoint,
t=1/2T is about 8% larger than the free vector correlation function.
We discuss resulting constraints on the electric conductivity
and the thermal dilepton rate in a quark gluon plasma.
| Please, insert your presentation type (talk, poster) | talk |
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Primary author
Frithjof Karsch
(Brookhaven National Laboratory and Bielefeld University)
Co-authors
Anthony Francis
(Bielefeld University)
Heng-Tong Ding
(Bielefeld University)
Olaf Kaczmarek
(Bielefeld University)
Wolfgang Soeldner
(Helmholtz International Center for FAIR (HIC for FAIR))
