The massive gluon and the massless pion
Pre-published on:
May 06, 2020
Published on:
May 26, 2020
Abstract
Lattice simulations of Yang-Mills theories and QCD in the Landau gauge demonstrate that the gluon propagator reaches a finite nonzero value at vanishing momentum. This can be modelled by a simple deformation of the corresponding Faddeev-Popov Lagrangian known as the Curci-Ferrari model. The latter does not modify the known ultraviolet regime of the theory and provides a successful perturbative description of essential aspects of the non-Abelian dynamics in the infrared regime, where, in particular, the coupling remains finite, as also seen in lattice simulations. This opens the possibility of a controlled (semi)perturbative description of various aspects of the infrared QCD dynamics, including correlation functions and the deconfinement phase transition at finite temperature and density. I present recent progress concerning the description of chiral symmetry breaking in this context.
DOI: https://doi.org/10.22323/1.374.0080
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.