Spectral functions of confined particles
High Energy Physics - Phenomenology
2020-03-02 v3 High Energy Physics - Lattice
High Energy Physics - Theory
Abstract
We determine the gluon and ghost spectral functions along with the analytic structure of the associated propagators from numerical data describing gauge correlators at space-like momenta obtained by either solving the Dyson-Schwinger equations or through lattice simulations. Our novel reconstruction technique shows the expected branch cut for the gluon and the ghost propagator, which, in the gluon case, is supplemented with a pair of complex conjugate poles. Possible implications of the existence of these poles are briefly addressed.
Keywords
Cite
@article{arxiv.1904.08172,
title = {Spectral functions of confined particles},
author = {Daniele Binosi and Ralf-Arno Tripolt},
journal= {arXiv preprint arXiv:1904.08172},
year = {2020}
}
Comments
7 pages, 5 figures. Extended version which includes the analysis of lattice unquenched 2+1+1 Landau gauge data and quenched Rxi gauge data. Matches the published version in PLB