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14 papers · 1 filter
Timelike form factor for the anomalous process
Angel S. Miramontes, Gernot Eichmann, Reinhard Alkofer
The form factor for the anomalous process is calculated in the isospin limit for several values of the light current-quark mass (i.e., the…
Dynamical Chiral Symmetry Breaking in Quantum Chromo Dynamics: Delicate and Intricate
Reinhard Alkofer
Dynamical Chiral Symmetry Breaking (DCSB) in Quantum Chromo Dynamics (QCD) for the light quarks is an indispensable concept for understanding hadron physics, i.e., the spectrum and…
Pole-fitting for complex functions: enhancing standard techniques by artificial-neural-network classifiers and regressors
S. Kaidisch, T. U. Hilger, A. Krassnigg +1
Motivated by a use case in theoretical hadron physics, we revisit an application of a pole-sum fit to dressing functions of a confined quark propagator. More precisely, we investig…
Yang-Mills propagators in linear covariant gauges from Nielsen identities
Martin Napetschnig, Reinhard Alkofer, Markus Q. Huber +1
We calculate gluon and ghost propagators in Yang-Mills theory in linear covariant gauges. To that end, we utilize Nielsen identities with Landau gauge propagators and vertices as t…
On non-primitively divergent vertices of Yang-Mills theory
Markus Q. Huber
Two correlation functions of Yang-Mills beyond the primitively divergent ones, the two-ghost-two-gluon and the four-ghost vertices, are calculated and their influence on lower vert…
Phase structure and propagators at nonvanishing temperature for QCD and QCD-like theories
Romain Contant, Markus Q. Huber
We investigate the universality of truncation schemes for Dyson-Schwinger equations developed for quantum chromodynamics in theories which differ from quantum chromodynamics only i…