Electrical conductivity and charge diffusion in thermal QCD from the lattice
High Energy Physics - Lattice
2015-06-23 v2 Nuclear Theory
Abstract
We present a lattice QCD calculation of the charge diffusion coefficient, the electrical conductivity and various susceptibilities of conserved charges, for a range of temperatures below and above the deconfinement crossover. The calculations include the contributions from up, down and strange quarks. We find that the diffusion coefficient is of the order of 1/(2\pi T) and has a dip around the crossover temperature. Our results are obtained with lattice simulations containing 2+1 dynamical flavours on anisotropic lattices. The Maximum Entropy Method is used to construct spectral functions from correlators of the conserved vector current.
Cite
@article{arxiv.1412.6411,
title = {Electrical conductivity and charge diffusion in thermal QCD from the lattice},
author = {Gert Aarts and Chris Allton and Alessandro Amato and Pietro Giudice and Simon Hands and Jon-Ivar Skullerud},
journal= {arXiv preprint arXiv:1412.6411},
year = {2015}
}
Comments
27 pages, several figures; references added, to appear in JHEP