Speaker
Alexandre Falcão
(University of Coimbra)
Description
In a quantum filed theory, the determination of the analytic structure of the propagators, i.e., the position of poles and branch cuts for complex momenta, can be obtained within the perturbative solution of the theory. The analytic structure has information on the properties of the associated quanta and, particularly, if they are or not confined particles. In Quantum Chromodynamics the computation of the complete propagators resorts in numerical calculations and, typically, only a limited range of momenta is obtained. Herein, we use Padé approximates to explore the analytic structure of the gluon propagator as computed in lattice QCD.
Primary authors
Alexandre Falcão
(University of Coimbra)
Prof.
Orlando Oliveira
(University of Coimbra)
Dr
Paulo Silva
(University of Coimbra)
