TY  - JOUR
AU  - Horak, J.
AU  - Papavassiliou, J.
AU  - Pawlowski, J. M.
AU  - Wink, N.
PY  - 2021
DA  - 2021//
TI  - Ghost spectral function from the spectral Dyson-Schwinger equation
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 074017
EP  - 16pp
VL  - 104
IS  - 7
PB  - Amer Physical Soc
AB  - 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.
SN  - 2470-0010
UR  - https://arxiv.org/abs/2103.16175
UR  - https://doi.org/10.1103/PhysRevD.104.074017
DO  - 10.1103/PhysRevD.104.074017
LA  - English
N1  - WOS:000753716600001
ID  - Horak_etal2021
ER  -