Numerical approach to Coulomb gauge QCD

Journal Article · Tue Jul 01 00:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.014033· OSTI ID:21250239

Matevosyan, Hrayr H; Szczepaniak, Adam P; Bowman, Patrick O ^[1]

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1. Department of Physics and Nuclear Theory Center, Indiana University, Bloomington, Indiana, 47405 (United States)

We calculate the ghost two-point function in Coulomb gauge QCD with a simple model vacuum gluon wave function using Monte Carlo integration. This approach extends the previous analytic studies of the ghost propagator with this ansatz, where a ladder-rainbow expansion was unavoidable for calculating the path integral over gluon field configurations. The new approach allows us to study the possible critical behavior of the coupling constant, as well as the Coulomb potential derived from the ghost dressing function. We demonstrate that IR enhancement of the ghost correlator or Coulomb form factor fails to quantitatively reproduce confinement using Gaussian vacuum wave functional.

• OSTI ID: 21250239
• Journal Information: Physical Review. D, Particles Fields, Vol. 78, Issue 1; Other Information: DOI: 10.1103/PhysRevD.78.014033; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPUTERIZED SIMULATION
CONFIGURATION
CONFINEMENT
COULOMB FIELD
COUPLING CONSTANTS
EXPANSION
FORM FACTORS
GAUGE INVARIANCE
GLUONS
MONTE CARLO METHOD
PROPAGATOR
QUANTUM CHROMODYNAMICS
WAVE FUNCTIONS