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Electrical conductivity of the quark-gluon plasma across the deconfinement transition
Alessandro Amato1, Gert Aarts, Chris Allton
1Department of Physics, College of Science, Swansea University, Swansea SA2 8PP, United Kingdom and Institute for Theoretical Physics, Universität Regensburg, D-93040 Regensburg, Germany.
Abstract:
A lattice calculation is presented for the electrical conductivity σ of the QCD plasma with 2+1 dynamical flavors at nonzero temperature. We employ the conserved lattice current on anisotropic lattices using a tadpole-improved clover action and study the behavior of the conductivity over a wide range of temperatures, both below and above the deconfining transition. The conductivity is extracted from a spectral-function analysis using the maximal entropy method, and a discussion of its systematics is provided. We find an increase of σ/T across the transition.
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