dc.contributor | DCTA | |
dc.contributor | Universidade Estadual Paulista (UNESP) | |
dc.contributor | Universidade Cruzeiro Do sul | |
dc.date.accessioned | 2022-04-29T08:28:05Z | |
dc.date.accessioned | 2022-12-20T02:42:05Z | |
dc.date.available | 2022-04-29T08:28:05Z | |
dc.date.available | 2022-12-20T02:42:05Z | |
dc.date.created | 2022-04-29T08:28:05Z | |
dc.date.issued | 2019-05-01 | |
dc.identifier | Physical Review D, v. 99, n. 9, 2019. | |
dc.identifier | 2470-0029 | |
dc.identifier | 2470-0010 | |
dc.identifier | http://hdl.handle.net/11449/228690 | |
dc.identifier | 10.1103/PhysRevD.99.094027 | |
dc.identifier | 2-s2.0-85066957217 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/5408825 | |
dc.description.abstract | The relative contributions of explicit and dynamical chiral symmetry breaking in QCD models of the quark-gap equation are studied in dependence of frequently employed Ansätze for the dressed interaction and quark-gluon vertex. The explicit symmetry breaking contributions are defined by a constituent-quark sigma term whereas the combined effects of explicit and dynamical symmetry breaking are described by a Euclidean constituent-mass solution. We extend this study of the gap equation to a quark-gluon vertex beyond the Abelian approximation complemented with numerical gluon- and ghost-dressing functions from lattice QCD. We find that the ratio of the sigma term over the Euclidean mass is largely independent of nonperturbative interaction and vertex models for current-quark masses, mu,d(μ)≤m(μ)≤mb(μ), and equal contributions of explicit and dynamical chiral symmetry breaking occur at m(μ)≈400 MeV. For massive solutions of the gap equation with lattice propagators this value decreases to about 220 MeV. | |
dc.language | eng | |
dc.relation | Physical Review D | |
dc.source | Scopus | |
dc.title | Interplay of dynamical and explicit chiral symmetry breaking effects on a quark | |
dc.type | Artículos de revistas | |