Skip to content
DraconiticResearch
Search Sources API
185,139 studies31 sourcesUpdated 41 min ago
PreprintCC BY 4.0arXiv

Nonperturbative Dyson--Schwinger equations in QCD: a first approximation

  • Vladimir Dzhunushaliev
  • Vladimir Folomeev
Open at sourcePDFDOICite

Abstract

We consider a procedure for nonperturbative quantization based on an infinite system of nonperturbative Dyson--Schwinger equations. We propose a first approximation for truncating this infinite system of equations in the static case. The main ideas underlying this approximation are as follows: (a) the two-point Green's functions of vacuum gauge fields are factorized by introducing scalar fields; (b) in the non-vacuum case, the degrees of freedom of the SU(3) gauge field can be divided into ``almost classical'' and ``almost quantum'' degrees of freedom; (c) the four-point Green's functions of the gauge fields are represented as bilinear combinations of two-point Green's functions; (d) an approximation for the three-point Green's function describing the interaction between quarks and gauge fields is proposed, which leads to the splitting of the original Dirac equation for the quark-field operators into two equations, one describing the expectation value of the fermion field and the other acquiring a nonlinear term and serving to describe a condensate composed of sea quarks bound by the vacuum gauge field. We consider the choice of gauge appropriate for this approximation to nonperturbative quantization. We point out that the emergence of a nonlinear Dirac equation within this approximation may lead to a mass gap in the energy spectrum of solutions of the corresponding systems of equations. The issue of the emergence of ``dimensional transmutation'' within this approximation is also discussed. We provide arguments in favor of the statement that the ``closure constants'' appearing in the finite truncation and giving rise to ``dimensional transmutation'' should survive in the transition to the infinite system of Dyson--Schwinger equations. An analogy between nonperturbative quantization and the stochastic theory of turbulence is also discussed.

Related

  1. Unfolded Schwinger-Dyson hierarchy for vertex functions
    Nikita Misuna
    arXivPreprintCC BY 4.0Full textHigh-energy & particle physicsarXiv
  2. Checking the Schwinger-Dyson equation in the purely open matrix-tensor model
    Daniel L. Jafferis, Liza Rozenberg, Diandian Wang +1
    arXivPreprintCC BY 4.0Full textGravitation & general relativityHigh-energy & particle physicsarXiv
  3. Real-time Dyson expansion for the nonequilibrium GW approximation: Correlated spectra and dependence on the reference propagator
    Erik Schroedter, Jan-Philip Joost, Michael Bonitz +1
    arXivPreprintCC BY 4.0Full textCondensed matterarXiv
  4. Equations of state of hydrodynamic type and particle statistics of a Dyson gas in an analytic confining potential
    Antonio Moro
    arXivPreprintarXiv licenceFull textStatistical & nonlinear physicsarXiv
  5. Canonical differential equations for Feynman integrals from 𝒜-hypergeometric systems in the Schwinger representation
    Mateo Jimenez-Santacruz, Cristhiam Lopez-Arcos, Alexander Quintero Velez
    arXivPreprintCC BY 4.0Full textAlgebra & number theoryMathematical physicsarXiv

Cite

BibTeXRIS
BibTeX
@misc{dzhunushaliev2026nonperturbative,
  title = {{Nonperturbative Dyson--Schwinger equations in QCD: a first approximation}},
  author = {Vladimir Dzhunushaliev and Vladimir Folomeev},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.39506},
  eprint = {2609.39506},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.39506},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Nonperturbative Dyson--Schwinger equations in QCD: a first approximation
AU  - Vladimir Dzhunushaliev
AU  - Vladimir Folomeev
PY  - 2026
DA  - 2026/09/30
PB  - arXiv
DO  - 10.48550/arxiv.2609.39506
UR  - https://arxiv.org/abs/2609.39506
AB  - We consider a procedure for nonperturbative quantization based on an infinite system of nonperturbative Dyson--Schwinger equations. We propose a first approximation for truncating this infinite system of equations in the static case. The main ideas underlying this approximation are as follows: (a) the two-point Green's functions of vacuum gauge fields are factorized by introducing scalar fields; (b) in the non-vacuum case, the degrees of freedom of the SU(3) gauge field can be divided into ``almost classical'' and ``almost quantum'' degrees of freedom; (c) the four-point Green's functions of the gauge fields are represented as bilinear combinations of two-point Green's functions; (d) an approximation for the three-point Green's function describing the interaction between quarks and gauge fields is proposed, which leads to the splitting of the original Dirac equation for the quark-field operators into two equations, one describing the expectation value of the fermion field and the other acquiring a nonlinear term and serving to describe a condensate composed of sea quarks bound by the vacuum gauge field. We consider the choice of gauge appropriate for this approximation to nonperturbative quantization. We point out that the emergence of a nonlinear Dirac equation within this approximation may lead to a mass gap in the energy spectrum of solutions of the corresponding systems of equations. The issue of the emergence of ``dimensional transmutation'' within this approximation is also discussed. We provide arguments in favor of the statement that the ``closure constants'' appearing in the finite truncation and giving rise to ``dimensional transmutation'' should survive in the transition to the infinite system of Dyson--Schwinger equations. An analogy between nonperturbative quantization and the stochastic theory of turbulence is also discussed.
ER  -