Infrared saturation and phases of gauge theories with BRST symmetry

• Published in: The European physical journal. C, Particles and fields Vol. 74; no. 5; pp. 2881 - 20
• Main Authors: Mader, Valentin, Schaden, Martin, Zwanziger, Daniel, Alkofer, Reinhard
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2014; Springer Nature B.V
• Subjects: Astronomy; Astrophysics and Cosmology; Bosons; Coulomb friction; Elementary Particles; Gages; Gauges; Hadrons; Heavy Ions; Infrared; Measurement Science and Instrumentation; Nuclear Energy; Nuclear Physics; Phases; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Regular - Theoretical Physics; Regular Article - Theoretical Physics; Saturation; String Theory; Symmetry

We investigate the infrared limit of the quantum equation of motion of the gauge boson propagator in various gauges and models with a BRST symmetry. We find that the saturation of this equation at low momenta distinguishes between the Coulomb, Higgs and confining phase of the gauge theory. The Coulo...