Reconstructing the gluon
Anton K. Cyrol, Jan M. Pawlowski, Alexander Rothkopf, Nicolas Wink
SciPost Phys. 5, 065 (2018) · published 20 December 2018
- doi: 10.21468/SciPostPhys.5.6.065
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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.
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Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 Anton K. Cyrol,
- 1 2 Jan M. Pawlowski,
- 1 3 Alexander Rothkopf,
- 1 Nicolas Wink
- 1 Ruprecht-Karls-Universität Heidelberg / Heidelberg University
- 2 ExtreMe Matter Institute [EMMI]
- 3 Universitetet i Stavanger / University of Stavanger [UiS]
Funders for the research work leading to this publication