Quasigluon lifetime and confinement from first principles

Abstract

The mass and the lifetime of a gluon are evaluated from first principles at finite temperature across the deconfinement transition of pure SU(3) Yang-Mills theory, by a direct calculation of the pole of the propagator in the complex plane, using the finite temperature extension of a massive expansion in the Landau gauge. Even at T=0 the quasigluon lifetime is finite and the gluon is canceled from the asymptotic states, yielding a microscopic proof of confinement from first principles. Above the transition the damping rate is a linear increasing function of temperature as predicted by standard perturbation theory.

Final published version

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Cited by in corpus (17)

• Reconstructing the gluon
• Spectral representation of lattice gluon and ghost propagators at zero temperature
• Complex poles and spectral function of Yang-Mills theory
• The gluon propagator in linear covariant $R_{\xi }$ gauges
• The ghost-antighost-gluon vertex from the Curci-Ferrari model: Two-loop corrections
• Variational study of mass generation and deconfinement in Yang-Mills theory
• Calculation of the non-perturbative strong coupling from first principles
• One-loop RG improvement of the screened massive expansion in the Landau gauge
• Yang-Mills ghost propagator in linear covariant gauges
• Thermal extension of the screened massive expansion in the Landau gauge
• The Nielsen identities in screened theories
• Analytic continuation and physical content of the gluon propagator
• Screened massive expansion of Schwinger-Dyson equations
• QCD phase diagram from the gluon propagator at finite temperature and density
• A window on infrared QCD with small expansion parameters
• Screened massive expansion of the quark propagator in the Landau gauge
• One-loop analytic structure of the deep-infrared Landau-gauge gluon propagator at finite temperature