Nonperturbative study of the four-point heavy quark Green's functions in Coulomb gauge

Autor:	Popovici, Carina, Watson, Peter, Reinhardt, Hugo
Rok vydání:	2011
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Theory
Druh dokumentu:	Working Paper
Popis:	The heavy quark sector of Coulomb gauge QCD is investigated, by making a heavy quark mass expansion of the QCD action and restricting to the leading order. With the truncation of the Yang-Mills sector to include only dressed two-point functions, we study the Dyson-Schwinger equations for the four-point quark Green's functions (proper and amputated). In this limit, we provide an exact solution for the four-point quark Green's functions and show that the corresponding poles relate to the bound state energy of the heavy quark system. Moreover, a natural separation between the physical and unphysical poles in the Green's functions emerges. Comment: 12 pages, 5 figures, talk given at the International Workshop on QCD Green's Functions, Confinement and Phenomenology, 5-9 September 2011, Trento, Italy
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1112.5176 Zobrazit plný text záznamu View this record from Arxiv