Work

Locating the Gribov horizon

Year: 2018

Type: article

Abstract: We explore whether a tree-level expression for the gluon two-point function, supposed to express effects of an horizon term introduced to eliminate the Gribov ambiguity, is consistent with the propagator obtained in simulations of lattice-regularized quantum chromodynamics (QCD). In doing so, we insist that the gluon two-point function obey constraints that ensure a minimal level of consistency with parton-like behavior on the ultraviolet domain. In consequence, we are led to a position which supports a conjecture that the gluon mass and horizon scale are equivalent emergent mass-scales, each with a value of roughly 0.5 GeV; and wherefrom it appears plausible that the dynamical generation of a running gluon mass may alone be sufficient to remove the Gribov ambiguity.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.97.034010

Authors: Fei Gao, Si-Xue Qin, Craig D. Roberts, Jose Rodríguez-Quintero

Institutions: Peking University, State Key Laboratory of Nuclear Physics and Technology, Chongqing University, Argonne National Laboratory, Universidad de Huelva

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: U.S. Department of Energy, National Natural Science Foundation of China, Office of Science, Nuclear Physics