The soft-gluon limit and the infrared enhancement of the quark-gluon vertex
arXiv:2006.04982 · doi:10.1140/epjc/s10052-020-8037-0
Abstract
The Schwinger-Dyson quark equation (SDE) combined with results from lattice simulation for the propagators are used to obtain information on the quark-gluon vertex, taking into account the recent full QCD lattice results for the soft-gluon limit. Its inclusion leads to a clear enhancement of the infrared quark-gluon vertex. We also find that the relative contribution of the quark-ghost kernel to the quark-gluon vertex in the infrared region does not follow the rules from the perturbative analysis of the ultraviolet region. This shows that for QCD the intuition based on perturbation theory does not apply to the full momentum range. The framework developed in the current work provides analytical expressions for all the longitudinal components of vertex taken into account.
References in corpus (38)
- The Infrared Behavior of QCD Green's Functions - Confinement, Dynamical Symmetry Breaking, and Hadrons as Relativistic Bound States
- pi- and K-meson Bethe-Salpeter Amplitudes
- Infrared Properties of QCD from Dyson-Schwinger equations
- Bethe-Salpeter Study of Vector Meson Masses and Decay Constants
- Baryons as relativistic three-quark bound states
- Explanation and Prediction of Observables using Continuum Strong QCD
- Non-perturbative Propagators, Running Coupling and Dynamical Quark Mass of Landau gauge QCD
- Analysis of a quenched lattice-QCD dressed-quark propagator
- Infrared Exponents and Running Coupling of SU(N) Yang-Mills Theories
- Dressed-quark anomalous magnetic moments
- Quark flavour effects on gluon and ghost propagators
- The three-gluon vertex in Landau gauge
- Lattice Gluon and Ghost Propagators, and the Strong Coupling in Pure SU(3) Yang-Mills Theory: Finite Lattice Spacing and Volume Effects
- Chiral symmetry breaking with lattice propagators
- Natural constraints on the gluon-quark vertex
- Quark-gluon vertex in arbitrary gauge and dimension
- ONE LOOP QED VERTEX IN ANY COVARIANT GAUGE: ITS COMPLETE ANALYTIC FORM
- The quark-gluon vertex in Landau gauge bound-state studies
- Dynamical chiral symmetry breaking and the fermion--gauge-boson vertex
- Practical corollaries of transverse Ward-Green-Takahashi identities
- On the Quark-Gluon Vertex and Quark-Ghost Kernel: combining Lattice Simulations with Dyson-Schwinger equations
- Building the Full Fermion-Photon Vertex of QED by Imposing Multiplicative Renormalizability of the Schwinger-Dyson Equations for the Fermion and Photon Propagators
- A new method for determining the quark-gluon vertex
- High Precision Statistical Landau Gauge Lattice Gluon Propagator Computation vs. the Gribov-Zwanziger approach
- Quark gap equation with non-abelian Ball-Chiu vertex
- Quark propagator with two flavors of O(a)-improved Wilson fermions
- Nontrivial ghost-gluon vertex and the match of RGZ, DSE and lattice Yang-Mills propagators
- Quark-gluon Vertex: A Perturbation Theory Primer and Beyond
- Non-Abelian Ball-Chiu vertex for arbitrary Euclidean momenta
- Nonperturbative structure of the ghost-gluon kernel
- Quark-gluon vertex from the Landau gauge Curci-Ferrari model
- Transverse Takahashi Identities and Their Implications for Gauge Independent Dynamical Chiral Symmetry Breaking
- Exploring the Quark-Gluon Vertex with Slavnov-Taylor Identities and Lattice Simulations
- Interplay of dynamical and explicit chiral symmetry breaking effects on a quark
- The Quark-Gluon Vertex and the QCD Infrared Dynamics
- Local Gauge Transformation for the Quark Propagator in an SU(N) Gauge Theory
- Lattice Landau gauge quark propagator and the quark-gluon vertex
- The Equal-Time Quark Propagator in Coulomb Gauge
Cited by in corpus (16)
- Ghost dynamics in the soft gluon limit
- Distribution Amplitudes of Heavy Mesons and Quarkonia on the Light Front
- Quark-gluon vertex from Nf=2 lattice QCD
- Observing the Minkowskian dynamics of the pion on the null-plane
- Dynamical mass generation in Minkowski space at QCD scale
- The impact of transverse Slavnov-Taylor identities on dynamical chiral symmetry breaking
- Distribution amplitudes of light diquarks
- Transport coefficients in AdS/CFT and quantum gravity corrections due to a functional measure
- The Podolsky propagator in gap and bound-state equations
- A comprehensive approach to the physics of mesons
- Looking at QED with Dyson-Schwinger equations: basic equations, Ward-Takahashi identities and the two-photon-two-fermion irreducible vertex
- Proton quark distributions from a light-front Faddeev-Bethe-Salpeter approach
- Parton distribution and fragmentation functions with massive gluons
- Influence of light quark loops on the Wigner phase with Dyson-Schwinger equations approach
- Transport and response coefficients in second-order dissipative relativistic hydrodynamics with quantum corrections: probing the quark-gluon plasma
- Pion electromagnetic form factor with Minkowskian dynamics