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Analytic structure of an Ansatz nonperturbative quark propagator, and phenomenological restrictions (CROSBI ID 646500)

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Klabučar, Dubravko ; Kekez, Dalibor Analytic structure of an Ansatz nonperturbative quark propagator, and phenomenological restrictions // AUSTRIAN-CROATIAN-HUNGARIAN 2016 MEETING (ACHT 2016) Non-perturbative aspects of Quantum Field Theory Čakovec, Hrvatska, 05.10.2016-07.10.2016

Podaci o odgovornosti

Klabučar, Dubravko ; Kekez, Dalibor

engleski

Analytic structure of an Ansatz nonperturbative quark propagator, and phenomenological restrictions

The analytic structure of certain Ansaetze for quark propagators in the nonperturbative regime of QCD is investigated. When choosing physically motivated parameterization of the momentum-dependent dressed quark mass function M(p2), with definite analytic structure, it is highly nontrivial to predict and control the analytic structure of the corresponding nonperturbative quark propagator. The issue of the Wick rotation relating the Minkowski-space and Euclidean-space formulations is also highly nontrivial in the nonperturbative case. A propagator form allowing the Wick rotation and enabling equivalent calculations in Minkowski and Euclidean spaces is presented.

quark propagator, nonperturbative QCD, analytic structure

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Podaci o skupu

AUSTRIAN-CROATIAN-HUNGARIAN 2016 MEETING (ACHT 2016) Non-perturbative aspects of Quantum Field Theory

ostalo

05.10.2016-07.10.2016

Čakovec, Hrvatska

Povezanost rada

Fizika