TY  - JOUR
A1  - Binosi, Daniele
A1  - Tripolt, Ralf-Arno
T1  - Spectral functions of confined particles
T2  - Physics Letters B
N2  - 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.
KW  - General properties of QCD (dynamics, confinement, etc.)
KW  - Other nonperturbative calculations
KW  - Gluons
Y1  - 2019
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/54439
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-544397
SN  - 0370-2693
VL  - 801.2020
IS  - 135171
SP  - 1
EP  - 8
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  -