542 citations
- Ghent University HospitalBE4 papers
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12 papers · 1 filter
A renormalization group invariant scalar glueball operator in the (Refined) Gribov-Zwanziger framework
David Dudal, Silvio Paolo Sorella, Nele Vandersickel +1
This paper presents a complete algebraic analysis of the renormalizability of the operator in the Gribov-Zwanziger (GZ) formalism as well as in the Refined Gribov-…
Gribov no-pole condition, Zwanziger horizon function, Kugo-Ojima confinement criterion, boundary conditions, BRST breaking and all that
D. Dudal, S. P. Sorella, N. Vandersickel +1
We aim to offer a kind of unifying view on two popular topics in the studies of nonperturbative aspects of Yang-Mills theories in the Landau gauge: the so-called Gribov-Zwanziger a…
A refinement of the Gribov-Zwanziger approach in the Landau gauge: infrared propagators in harmony with the lattice results
David Dudal, John Gracey, Silvio Paolo Sorella +2
Recent lattice data have reported an infrared suppressed, positivity violating gluon propagator which is nonvanishing at zero momentum and a ghost propagator which is no longer enh…
Resolving the instability of the Savvidy vacuum by dynamical gluon mass
David Vercauteren, Henri Verschelde
In this paper we apply the formalism of local composite operators as developed by Verschelde et al. in combination with a constant chromomagnetic field as considered in the seventi…
New features of the gluon and ghost propagator in the infrared region from the Gribov-Zwanziger approach
D. Dudal, S. P. Sorella, N. Vandersickel +1
So far, the infrared behavior of the gluon and ghost propagator based on the Gribov-Zwanziger approach predicted a positivity violating gluon propagator vanishing at zero momentum,…
Harmonic oscillator chains as Wigner Quantum Systems: periodic and fixed wall boundary conditions in gl(1|n) solutions
S. Lievens, N. I. Stoilova, J. Van der Jeugt
We describe a quantum system consisting of a one-dimensional linear chain of n identical harmonic oscillators coupled by a nearest neighbor interaction. Two boundary conditions are…