Exploratory study of the temperature dependence of magnetic vertices in SU(2) Landau gauge Yang--Mills theory

Abstract

Vertices describe the interactions between the fundamental degrees of freedom, and are therefore of vital importance in many ab-initio descriptions of field theory, especially using functional methods. To this end, we present the first lattice study of the thermal behavior of (minimal) Landau-gauge SU(2) Yang--Mills three-point functions, i.e. three-gluon and ghost-gluon vertices. Focusing on the chromomagnetic sector, we find that the phase transition mainly affects the three-gluon vertex, while the ghost-gluon vertex is relatively inert.

Comments: 12 pages, 10 figures. v2: better statistics, 2 additional figures, version accepted by PRD