%0 Journal Article
%T Ghost spectral function from the spectral Dyson-Schwinger equation
%A Horak, J.
%A Papavassiliou, J.
%A Pawlowski, J. M.
%A Wink, N.
%J Physical Review D
%D 2021
%V 104
%N 7
%I Amer Physical Soc
%@ 2470-0010
%G English
%F Horak_etal2021
%O WOS:000753716600001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5122), last updated on Mon, 21 Feb 2022 13:26:25 +0000
%X We compute the ghost spectral function in Yang-Mills theory by solving the corresponding Dyson-Schwinger equation for a given input gluon spectral function. The results encompass both scaling and decoupling solutions for the gluon propagator input. The resulting ghost spectral function displays a particle peak at vanishing momentum and a negative scattering spectrum, whose infrared and ultraviolet tails are obtained analytically. The ghost dressing function is computed in the entire complex plane, and its salient features are identified and discussed.
%R 10.1103/PhysRevD.104.074017
%U https://arxiv.org/abs/2103.16175
%U https://doi.org/10.1103/PhysRevD.104.074017
%P 074017-16pp