104 citations · 1.4k across the 76 of their papers we have counts for
70 papers · 1 filter
A Lorentzian Gribov no-pole condition for Yang-Mills theory
M. S. Guimaraes
For over four decades, Gribov's no-pole condition has been almost exclusively explored in Euclidean space, where the elliptic nature of the Faddeev-Popov operator provides a clear…
Maximal violation of the Bell-Clauser-Horne-Shimony-Holt inequality via bumpified Haar wavelets
David Dudal, Philipe De Fabritiis, Marcelo S. Guimaraes +2
We devise a general setup to investigate the violation of the Bell-CHSH inequality in the vacuum state in the context of Quantum Field Theory. We test the method with massless spin…
BRST invariant formulation of the Bell-CHSH inequality in gauge field theories
David Dudal, Philipe De Fabritiis, Marcelo S. Guimaraes +2
A study of the Bell-CHSH inequality in gauge field theories is presented. By using the Kugo-Ojima analysis of the BRST charge cohomology in Fock space, the Bell-CHSH inequality is…
Gribov horizon in Noncommutative QED
Ozório Holanda, Marcelo S. Guimaraes, Luigi Rosa +1
It is known that Noncommutative QED (NCQED) exhibits Gribov ambiguities in the Landau gauge. These ambiguities are related to zero modes of the Faddeev-Popov operator and arise in…
Spectral properties of local gauge invariant composite operators in the Yang--Mills--Higgs model
D. Dudal, D. M. van Egmond, M. S. Guimaraes +3
The spectral properties of a set of local gauge (BRST) invariant composite operators are investigated in the Yang--Mills--Higgs model with a single Higgs field in the funda…
Gauge-invariant spectral description of the Higgs model from local composite operators
David Dudal, Duive Maria van Egmond, Marcelo Santos Guimaraes +4
The spectral properties of a set of local gauge-invariant composite operators are investigated in the Higgs model quantized in the 't Hooft gauge. These operators enab…
Some remarks on the spectral functions of the Abelian Higgs Model
D. Dudal, D. M. van Egmond, M. S. Guimaraes +5
We consider the unitary Abelian Higgs model and investigate its spectral functions at one-loop order. This analysis allows to disentangle what is physical and what is not at the le…
Multivalued fields and monopole operators
P. R. Braga, M. S. Guimaraes, M. M. A. Paganelly
In this work, we investigate the role of multivalued fields in the formulation of monopole operators and their connection with topological states of matter. In quantum field theory…
The universal character of Zwanziger's horizon function in Euclidean Yang-Mills theories
M. A. L. Capri, D. Dudal, M. S. Guimaraes +4
In light of the recently established BRST invariant formulation of the Gribov-Zwanziger theory, we show that Zwanziger's horizon function displays a universal character. More preci…
Renormalizability of super Yang-Mills theory in Landau gauge with a Stueckelberg-like field
M. A. L. Capri, D. M. van Egmond, M. S. Guimaraes +4
We construct a vector gauge invariant transverse field configuration , consisting of the well-known superfield and of a Stueckelberg-like chiral superfield. The renormaliz…
On a renormalizable class of gauge fixings for the gauge invariant operator
M. A. L. Capri, D. M. van Egmond, G. Peruzzo +5
The dimension two gauge invariant non-local operator , obtained through the minimization of along the gauge orbit, allows to introduce a non-local ga…
Non-perturbative aspects of Euclidean Yang-Mills theories in linear covariant gauges: Nielsen identities and a BRST invariant two-point correlation function
M. A. L. Capri, D. Dudal, A. D. Pereira +5
In order to construct a gauge invariant two-point function in a Yang-Mills theory, we propose the use of the all-order gauge invariant transverse configurations A^h. Such configura…
On the gauge-invariant operator in Euclidean Yang-Mills theories
M. A. L. Capri, D. Fiorentini, M. S. Guimaraes +3
We review our recent work on the gauge-invariant non-local dimension-two operator , whose minimization is defined along the gauge orbit. Albeit non-local, the operat…
Remarks on the effects of the Gribov copies on the infrared behavior of higher dimensional Yang-Mills theory
M. S. Guimaraes, A. D. Pereira, S. P. Sorella
In this paper, we discuss non-perturbative infrared features of Yang-Mills theory in Euclidean space-time dimensions greater than four in the Landau gauge and within the Refined Gr…
A local and renormalizable framework for the gauge-invariant operator in Euclidean Yang-Mills theories in linear covariant gauges
M. A. L. Capri, D. Fiorentini, M. S. Guimaraes +3
We address the issue of the renormalizability of the gauge-invariant non-local dimension-two operator , whose minimization is defined along the gauge orbit. Despite…
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…
Effective field theories for superconducting systems with multiple Fermi surfaces
P. R. Braga, D. R. Granado, M. S. Guimaraes +1
In this work we investigate the description of superconducting systems with multiple Fermi surfaces. For the case of one Fermi surface we re-obtain the result that the superconduct…
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…
The Veneziano ghost, glost and gauge copies in QCD
D. Dudal, M. S. Guimaraes
In this short note, we come back to the recent proposal put forward by Kharzeev and Levin [PRL 114 (2015) 24, 242001], in which they phenomenologically couple the non-perturbative…
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…
Vanishing DC holographic conductivity from a magnetic monopole condensate
Romulo Rougemont, Jorge Noronha, Carlos A. D. Zarro +3
We show how to obtain a vanishing DC conductivity in 3-dimensional strongly coupled QFT's using a massive 2-form field in the bulk that satisfies a special kind of boundary conditi…
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…
Dimension two condensates in the Gribov-Zwanziger theory in the Coulomb gauge
M. S. Guimaraes, B. W. Mintz, S. P. Sorella
We investigate the dimension two condensate within the Gribov-Zwanziger approach to Euclidean Yang-Mills theories in the Co…
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…