A Dyson-Schwinger model beyond isospin limit prepared for investigating U_A(1)-breaking temperature dependence
High Energy Physics - Phenomenology
2021-02-03 v1 Nuclear Theory
Abstract
Motivated by our earlier findings of sensitive quark-flavor dependence of QCD topological susceptibility on products of current quark masses and corresponding condensates, we allow the breaking of isospin symmetry. For the purpose of future investigations of U_A(1) symmetry breaking and restoration at T > 0, we perform (at T = 0) refitting of the quark-mass parameters of a phenomenologically successful effective model of low-energy QCD. It belongs to the class of separable-interaction models within the Dyson-Schwinger approach to the quark-antiquark substructure of mesons.
Keywords
Cite
@article{arxiv.2006.15395,
title = {A Dyson-Schwinger model beyond isospin limit prepared for investigating U_A(1)-breaking temperature dependence},
author = {Davor Horvatić and Dalibor Kekez and Dubravko Klabučar},
journal= {arXiv preprint arXiv:2006.15395},
year = {2021}
}
Comments
8 pages, 1 figure, 3 tables