The Gluon Propagator with Two-loop Schwinger-Dyson Equations

Autor:	Meyers, Joseph, Swanson, Eric S.
Rok vydání:	2014
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Theory
Zdroj:	Phys. Rev. D 90, 045037 (2014)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.90.045037
Popis:	Gluon, ghost, and quark propagators are computed in the Schwinger-Dyson formalism. The full set of one-loop and two-loop contributions to the gap equations are evaluated for the first time. A new and efficient method for dealing with quadratic divergences is presented and a consistent renormalization method is proposed. We find that the two-loop contribution to the propagators is subleading, good fits to lattice data are possible, and reliable vertex models are important to obtaining desired ultraviolet, infrared, and gauge-symmetric behavior. Comment: 13 pages, 6 figures. v2: new figures, added references and discussion
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1403.4350 Zobrazit plný text záznamu View this record from Arxiv