Lifetime and confinement of a quasi-gluon

Abstract

The existence of genuine complex conjugated poles in the gluon propagator is discussed and related to confinement, string tension and condensates. The existence of the anomalous poles leads to an untrivial analytic continuation from Euclidean to Minkowski space, where the pole part of the propagator is related to the spectrum of excited quasigluons.

Comments: Presented at Excited QCD 2022 - Giardini Naxos