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Nucleon axial and pseudoscalar form factors from the covariant Faddeev equation
Gernot Eichmann, Christian S. Fischer
We compute the axial and pseudoscalar form factors of the nucleon in the Dyson-Schwinger approach. To this end, we solve a covariant three-body Faddeev equation for the nucleon wav…
Hadronic contribution to the muon g-2: a Dyson-Schwinger perspective
Tobias Goecke, Christian S. Fischer, Richard Williams
We summarize our results for hadronic contributions to the anomalous magnetic moment of the muon (), the one from hadronic vacuum-polarisation (HVP) and the light-by-light sca…
Unified description of hadron-photon and hadron-meson scattering in the Dyson-Schwinger approach
Gernot Eichmann, Christian S. Fischer
We derive the expression for the nonperturbative coupling of a hadron to two external currents from its underlying structure in QCD. Microscopically, the action of each current is…
Effects of Anisotropy in (2+1)-dimensional QED
J. A. Bonnet, C. S. Fischer, R. Williams
We summarize our results for the impact of anisotropic fermionic velocities in (2+1)-dimensional QED on the critical number of fermion flavors, N^c_f, and dynamical mass generation…
Two-flavor QCD at finite temperature and chemical potential in a functional approach
Jan Luecker, Christian S. Fischer
We summarize recent results obtained in the Dyson-Schwinger formalism to study the chiral and deconfinement phase transitions of quenched and unquenched QCD at finite temperature a…
Leading-order calculation of hadronic contributions to the muon using the Dyson-Schwinger approach
Tobias Goecke, Christian S. Fischer, Richard Williams
We present a calculation of the hadronic vacuum polarization (HVP) tensor within the framework of Dyson--Schwinger equations. To this end we use a well-established phenomenological…