Reconstructing the gluon
High Energy Physics - Phenomenology
2018-12-26 v3 High Energy Physics - Lattice
High Energy Physics - Theory
Abstract
We reconstruct the gluon spectral function in Landau gauge QCD from numerical data for the gluon propagator. The reconstruction relies on two novel ingredients: Firstly we derive analytically the low frequency asymptotics of the spectral function. Secondly we construct a functional basis from a careful consideration of the analytic properties of the gluon propagator in Landau gauge. This allows us to reliably capture the non-perturbative regime of the gluon spectrum. We also compare different reconstruction methods and discuss the respective systematic errors.
Cite
@article{arxiv.1804.00945,
title = {Reconstructing the gluon},
author = {Anton K. Cyrol and Jan M. Pawlowski and Alexander Rothkopf and Nicolas Wink},
journal= {arXiv preprint arXiv:1804.00945},
year = {2018}
}
Comments
12 pages, 10 figures