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arXiv · 1601.01573

Perturbative renormalization of the electric field correlator

C. Christensen·M. Laine
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Abstract

The momentum diffusion coefficient of a heavy quark in a hot QCD plasma can be extracted as a transport coefficient related to the correlator of two colour-electric fields dressing a Polyakov loop. We determine the perturbative renormalization factor for a particular lattice discretization of this correlator within Wilson's SU(3) gauge theory, finding a ~12% NLO correction for values of the bare coupling used in the current generation of simulations. The impact of this result on existing lattice determinations is commented upon, and a possibility for non-perturbative renormalization through the gradient flow is pointed out.

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C. Christensen, M. Laine. 2016-03-18. Perturbative renormalization of the electric field correlator. https://doi.org/10.1016/j.physletb.2016.02.020

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