SciPost logo

The complete scientific publication portal
Managed by professional scientists
For open, global and perpetual access to science

SciPost Submission Page

Reconstructing the gluon

by Anton K. Cyrol, Jan M. Pawlowski, Alexander Rothkopf, Nicolas Wink

Submission summary

As Contributors: Nicolas Wink
Arxiv Link:
Date accepted: 2018-11-29
Date submitted: 2018-11-08
Submitted by: Wink, Nicolas
Submitted to: SciPost Physics
Domain(s): Theoretical
Subject area: High-Energy Physics - Phenomenology


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.

Current status:
Publication decision taken: accept

Author comments upon resubmission

We have included several suggestions from the first two referee reports.

List of changes

Main changes:
- Extended the reasoning behind the error band in Fig. 6
- Added a note about the consequences of positivity violation
- More details on the derivation of (20)
- Introduced $\kappa$ between (17) and (18)

Other changes:
- Corrected several typos
- Different hyperlink styling for appendices

Login to report or comment