Two-point functions of quenched lattice QCD in Numerical Stochastic Perturbation Theory. (II) The gluon propagator in Landau gauge
| Autor: | Holger Perlt, Arwed Schiller, F. Di Renzo, Ernst-Michael Ilgenfritz, C. Torrero |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Quantum chromodynamics
Physics Nuclear and High Energy Physics Chiral perturbation theory 010308 nuclear & particles physics High Energy Physics::Lattice High Energy Physics - Lattice (hep-lat) Lattice field theory FOS: Physical sciences Lattice QCD Yang–Mills theory 01 natural sciences Hamiltonian lattice gauge theory High Energy Physics - Lattice Quantum electrodynamics Lattice gauge theory 0103 physical sciences 010306 general physics Lattice model (physics) |
| Popis: | This is the second of two papers devoted to the perturbative computation of the ghost and gluon propagators in SU(3) Lattice Gauge Theory. Such a computation should enable a comparison with results from lattice simulations in order to reveal the genuinely non-perturbative content of the latter. The gluon propagator is computed by means of Numerical Stochastic Perturbation Theory: results range from two up to four loops, depending on the different lattice sizes. The non-logarithmic constants for one, two and three loops are extrapolated to the lattice spacing $a \to 0$ continuum and infinite volume $V \to \infty$ limits. 20 pages, 13 figures, version to be published, references added in the Introduction, figs 3,4,5 changed for better visibility |
| Databáze: | OpenAIRE |
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