Journal
PHYSICS LETTERS B
Volume 597, Issue 1, Pages 57-62Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2004.05.079
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The electrical conductivity in the hot phase of the QCD plasma is extracted from a quenched lattice measurement of the Euclidean time vector correlator for 1.5 less than or equal to T/T-c less than or equal to 3. The spectral density in the vicinity of the origin is examined using a method specially adapted to this region, and a peak at small energies is seen. The continuum limit of the electrical conductivity, and the closely related soft photon emissivity of the QCD plasma, are then extracted from a fit to the Fourier transform of the temporal vector correlator. (C) 2004 Elsevier B.V. All rights reserved.
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