104 citations · 486 across the 26 of their papers we have counts for
26 papers
Towards background field independence within the Gribov horizon
Igor F. Justo, Antonio D. Pereira, Rodrigo F. Sobreiro
We introduce a background gauge akin to the Landau-DeWitt gauge but deformed by the presence of a gauge parameter for the quantization of Euclidean Yang-Mills theories. In the limi…
Gauge Invariant Description of the Higgs model: Ward identities and Renormalization
David Dudal, Duifje Maria van Egmond, Igor Figueiredo Justo +2
The renormalization properties of two local gauge invariant composite operators corresponding, respectively, to the gauge invariant description of the Higgs particle an…
Infrared propagators of Yang-Mills-Chern-Simons theories in linear covariant gauges
Luigi C. Ferreira, Diego R. Granado, Igor F. Justo +1
Recent works have explored non-perturbative effects due to the existence of (infinitesimal) Gribov copies in Yang-Mills-Chern-Simons theories in three Euclidean dimensions. In part…
Gauge copies and the fate of background independence in Yang-Mills theories: a leading order analysis
O. C. Junqueira, I. F. Justo, D. S. Montes +2
In this work we investigate the effects of the Gribov prescription to get rid of zero-modes of the Faddeev-Popov operator, at one-loop order in perturbation theory, in the Landau-D…
Study of the renormalization of BRST invariant local composite operators in the Higgs model
M. A. L. Capri, I. F. Justo, L. F. Palhares +2
The renormalization properties of two local BRST invariant composite operators, , corresponding respectively to the gauge invariant description of the Higgs particle and o…
Gribov horizon, Polyakov loop and finite temperature
Fabrizio Canfora, David Dudal, Igor Justo +3
We consider finite-temperature gauge theory in the continuum formulation. Choosing the Landau gauge, the existing gauge copies are taken into account by means of the Gribov…
Extracting topological information from momentum space propagators
Fabrizio Canfora, David Dudal, Alex Giacomini +3
A new topological invariant quantity, sensitive to the analytic structure of both fermionic and bosonic propagators, is proposed. The gauge invariance of our construct is guarantee…
Non-Abelian extension of the aether term and the Gribov problem
D. R. Granado, C. P. Felix, I. F. Justo +2
In this paper, we treat the proper path integral quantization of the Yang-Mills-aether (YM-aether) system by dealing with the extra gauge copies in the Landau gauge. Within Gribov'…
Aspects of the Gribov problem in Euclidean Yang-Mills theories
I. F. Justo
The content of the present thesis is based on the papers [arXiv:1510.07886 [hep-th]][arXiv:1505.02287 [hep-th]][arXiv:1401.6303 [hep-th]][arXiv:1309.1402 [hep-th]][arXiv:1305.4155…
Double non-perturbative gluon exchange: an update on the soft Pomeron contribution to pp scattering
F. E. Canfora, D. Dudal, I. F. Justo +4
We employ a set of recent, theoretically motivated, fits to non-perturbative unquenched gluon propagators to check in how far double gluon exchange can be used to describe the soft…
Lorentz symmetry breaking in a Yang-Mills theory within the Gribov restriction
D. R. Granado, I. F. Justo, A. Yu. Petrov
In this paper we take into account the existence of Gribov copies in a four-dimensional Yang-Mills theory in the Landau gauge with an effective Lorentz symmetry breaking, induced b…
A local and BRST-invariant Yang-Mills theory within the Gribov horizon
M. A. L. Capri, D. Dudal, D. Fiorentini +7
We present a local setup for the recently introduced BRST-invariant formulation of Yang-Mills theories for linear covariant gauges that takes into account the existence of gauge co…
More on the non-perturbative Gribov-Zwanziger quantization of linear covariant gauges
M. A. L. Capri, D. Dudal, D. Fiorentini +7
In this paper, we discuss the gluon propagator in the linear covariant gauges in Euclidean dimensions. Non-perturbative effects are taken into account via the so-called R…
On general ultraviolet properties of a class of confining propagators
M. A. L. Capri, M. S. Guimaraes, I. Justo +2
We study the ultraviolet properties of theories whose fundamental fields display a confining, Gribov-type, propagator. These are propagators that exhibit complex poles and violate…
Confinement interpretation in a Yang-Mills + Higgs theory when considering Gribov's ambiguity
I. F. Justo, M. A. L. Capri, D. Dudal +4
This work presents concisely the results obtained from the analysis of the two-point function of the gauge field in the and gauge theories, in the Landau…
An exact nilpotent non-perturbative BRST symmetry for the Gribov-Zwanziger action in the linear covariant gauge
M. A. L. Capri, D. Dudal, D. Fiorentini +7
We point out the existence of a non-perturbative exact nilpotent BRST symmetry for the Gribov-Zwanziger action in the Landau gauge. We then put forward a manifestly BRST invariant…
On bounds and boundary conditions in the continuum Landau gauge
D. Dudal, M. S. Guimaraes, I. F. Justo +1
In this note, we consider the Landau gauge in the continuum formulation. Our purposes are twofold. Firstly, we try to work out the consequences of the recently derived Cucchieri-Me…
Properties of the Faddeev-Popov operator in the Landau gauge, matter confinement and soft BRST breaking
M. A. L. Capri, M. S. Guimaraes, I. F. Justo +2
In light of the development of the Gribov issue for pure Euclidean gauge theories and of the recent lattice measurement of soft breaking of the BRST invariance in Yang-Mills theori…
Implementing the Gribov-Zwanziger framework in N=1 Super Yang-Mills in the Landau gauge
M. A. L. Capri, D. R. Granado, M. S. Guimaraes +4
The Gribov-Zwanziger framework accounting for the existence of Gribov copies is extended to N=1 Super Yang--Mills theories quantized in the Landau gauge. We show that the restricti…
On the irrelevance of the Gribov issue in N=4 Super Yang-Mills in the Landau gauge
M. A. L. Capri, M. S. Guimaraes, I. F. Justo +2
The issue of the Gribov copies is discussed in Euclidean N=4 Super Yang-Mills theory quantized in the Landau gauge. As a consequence of the absence of a renormalization group invar…
Renormalization aspects of N=1 Super Yang-Mills theory in the Wess-Zumino gauge
M. A. L. Capri, D. R. Granado, M. S. Guimaraes +4
The renormalization of N=1 Super Yang-Mills theory is analysed in the Wess-Zumino gauge, employing the Landau condition. An all orders proof of the renormalizability of the theory…
The (IR-)relevance of the Gribov ambiguity in SU(2) x U(1) gauge theories with fundamental Higgs matter
M. A. L. Capri, D. Dudal, M. S. Guimaraes +3
It is well accepted that dealing with the Gribov ambiguity has a major impact on correlation functions in gauge-fixed Yang-Mills theories, in particular in the low momentum regime…
Spontaneous breaking of the BRST symmetry in presence of the Gribov horizon: renormalizability
M. A. L. Capri, D. Dudal, M. S. Guimaraes +3
An all orders algebraic proof of the multiplicative renormalizability of the novel formulation of the Gribov-Zwanziger action proposed in Phys. Rev. D 86, 045005 (2012) [arXiv:1205…
SU(2) x U(1) Yang-Mills theories in 3d with Higgs field and Gribov ambiguity
M. A. L. Capri, D. Dudal, M. S. Guimaraes +3
We study the structure of the gauge propagators of a 3d version of the electroweak interaction in terms of the Higgs vacuum expectation value nu, of the non-Abelian gauge coupling…