Influence of light quark loops on the Wigner phase with Dyson–Schwinger equations approach

We study the influence of light quark loops on the Wigner phase by solving coupled Dyson–Schwinger equations for quark propagator and gluon propagator. We take the gluon propagator in the Nambu phase from N f = 2 unquenched lattice QCD and choose various phenomenological models for the quark-gluon v...

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Published inThe European physical journal. A, Hadrons and nuclei Vol. 58; no. 7
Main Authors Huang, Jing-Hui, Hu, Xiang-Yun, Wang, Qi, Duan, Xue-Ying, Wang, Guang-Jun, Chen, Huan
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 10.07.2022
Subjects
Hadrons
Heavy Ions
Nuclear Fusion
Nuclear Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Regular Article - Theoretical Physics
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Summary:We study the influence of light quark loops on the Wigner phase by solving coupled Dyson–Schwinger equations for quark propagator and gluon propagator. We take the gluon propagator in the Nambu phase from N f = 2 unquenched lattice QCD and choose various phenomenological models for the quark-gluon vertex. The gluon propagator in Wigner phase is assumed to be different from that in the Nambu phase only due to the vacuum polarization of the quark loop. We obtain the Wigner solution of the coupled equations, compared with that from solving only the equation of the quark propagator. We discussed the corrections by the light quark loops and the dependence on various models of the quark-gluon vertex.
ISSN:1434-601X
1434-601X
DOI:10.1140/epja/s10050-022-00774-y