Publications (15)
Ghost dissection
David Dudal, Nele Vandersickel, Attilio Cucchieri +1
We show that a necessary condition to have a positive Landau-gauge ghost propagator in d=2 Yang-Mills theories is a vanishing zero-momentum gluon propagator. Our proof is based on…
The asymmetry of the dimension two condensate
David Vercauteren, David Dudal, John Gracey +2
I present recent analytical work concerning the electric-magnetic asymmetry in the dimension two condensate <A^2> in pure Yang-Mills theory. We reproduce qualitatively the lattice…
Evidence of BRST-Symmetry Breaking in Lattice Minimal Landau Gauge
Attilio Cucchieri, David Dudal, Tereza Mendes +1
By evaluating the so-called Bose-ghost propagator, we present the first numerical evidence of BRST-symmetry breaking for Yang-Mills theory in minimal Landau gauge, i.e. due to the…
BRST-Symmetry Breaking and Bose-Ghost Propagator in Lattice Minimal Landau Gauge
Attilio Cucchieri, David Dudal, Tereza Mendes +1
The Bose-ghost propagator has been proposed as a carrier of the confining force in Yang-Mills theories in minimal Landau gauge. We present the first numerical evaluation of this pr…
Modeling the Landau-Gauge Ghost Propagator in 2, 3 and 4 Space-Time Dimensions
Attilio Cucchieri, David Dudal, Tereza Mendes +1
We present an analytic description of numerical results for the ghost propagator G(p^2) in minimal Landau gauge on the lattice. The data were produced in the SU(2) case using the l…
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…
The No-Pole Condition in Landau gauge: Properties of the Gribov Ghost Form-Factor and a Constraint on the 2d Gluon Propagator
Attilio Cucchieri, David Dudal, Nele Vandersickel
We study the Landau-gauge Gribov ghost form-factor sigma(p^2) for SU(N) Yang-Mills theories in the d-dimensional case. We find a qualitatively different behavior for d=3,4 w.r.t. d…
Features of the Refined Gribov-Zwanziger theory: propagators, BRST soft symmetry breaking and glueball masses
Silvio P. Sorella, David Dudal, Marcelo S. Guimaraes +1
The present work discusses an approach to access the physical spectrum of the Yang-Mills theory quantized in the Landau gauge. By using recent lattice data on the gluon propagator,…
A study of the Gribov-Zwanziger action: from propagators to glueballs
Nele Vandersickel
This Ph.D. thesis presents a study of the Gribov-Zwanziger framework: from propagators to glueballs. The chapters 2 and 3 are meant as an introduction and only require a basic know…
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 Gribo…
Analytic approach to the study of the electric-magnetic asymmetry of the dimension 2 condensate
David Vercauteren, David Dudal, John Gracey +2
Recent work by Chernodub and Ilgenfritz has uncovered non-trivial temperature dependence in the electric-magnetic asymmetry in the dimension 2 condensate. This asymmetry measures t…
Massive gluon propagator at zero and finite temperature
Attilio Cucchieri, David Dudal, Tereza Mendes +1
We report on our study of the infrared gluon propagator for SU(2) lattice gauge theory using large lattice volumes. The observed massive behavior is discussed from the point of vie…
Modeling the Gluon Propagator in Landau Gauge: Lattice Estimates of Pole Masses and Dimension-Two Condensates
Attilio Cucchieri, David Dudal, Tereza Mendes +1
We present an analytic description of numerical results for the Landau-gauge SU(2) gluon propagator D(p^2), obtained from lattice simulations (in the scaling region) for the larges…
Unitarity analysis of a non-Abelian gauge invariant action with a mass
David Dudal, Nele Vandersickel, Henri Verschelde
In previous work done by us and coworkers, we have been able to construct a local, non-Abelian gauge invariant action with a mass parameter, based on the nonlocal gauge invariant m…
Dynamical anchoring of distant Arrhythmia Sources by Fibrotic Regions via Restructuring of the Activation Pattern
Nele Vandersickel, Masaya Watanabe, Qian Tao +3
Rotors are functional reentry sources identified in clinically relevant cardiac arrhythmias, such as ventricular and atrial fibrillation. Ablation targeting rotor sites has resulte…