Ozorio Holanda
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Ozorio Holanda has a total of 26 co-authors. Here are the top co-authors by number of shared publications:
- Duifje Maria van Egmond
Instituto de Física-Departamento de Física Universidade do Estado do Rio de Janeiro Teórica-Rua São Francisco Xavier 524 20550-013 Maracanã Rio de Janeiro Brasil
8 shared publications - Marcelo Santos Guimaraes
UERJ-Universidade do Estado do Rio de Janeiro
8 shared publications - Silvio Paolo Sorella
UERJ-Universidade do Estado do Rio de Janeiro
8 shared publications - Eduardo Passos
Departamento de Física, Universidade Federal de Campina Grande, Campina Grande, Brazil
7 shared publications - M. A. Anacleto
Departamento de Física, Universidade Federal de Campina Grande, Campina Grande, Brazil
7 shared publications - Giovani Peruzzo
Instituto de Fisica, Universidade Federal Fluminense, Niteroi, Brazil
6 shared publications
Latest Publications
- 7 October 2026
- Published by World Scientific Pub Co Pte Ltd in International Journal of Modern Physics B
- Vol. 40 (28)
Quantum anomalous Hall conductivity on the background of Lorentz-violating c -tensor
We investigate the quantum anomalous Hall effect in a (2+1)-dimensional fermionic system with a violation of emergent Lorentz invariance parametrized by the constant tensor [Formula: see text]. Through explicit one-loop calculations, we derive the polarization tensor and obtain the Hall conductivity using the Kubo formula. The conductivity exhibits explicit dependence on the Lorentz-violating parameters through the modified dispersion relation for the fermions. In the static limit ([Formula: see text]), we recover the universal quantized value [Formula: see text], demonstrating the robustness of topological response against this Lorentz-violating background.
- 7 October 2026
- Published by World Scientific Pub Co Pte Ltd in International Journal of Modern Physics B
- Vol. 40 (28)
Quantum anomalous Hall conductivity on the background of Lorentz-violating c -tensor
We investigate the quantum anomalous Hall effect in a (2+1)-dimensional fermionic system with a violation of emergent Lorentz invariance parametrized by the constant tensor [Formula: see text]. Through explicit one-loop calculations, we derive the polarization tensor and obtain the Hall conductivity using the Kubo formula. The conductivity exhibits explicit dependence on the Lorentz-violating parameters through the modified dispersion relation for the fermions. In the static limit ([Formula: see text]), we recover the universal quantized value [Formula: see text], demonstrating the robustness of topological response against this Lorentz-violating background.
- Open Access
- 2 November 2023
- Published by American Physical Society (APS) in Physical Review D
- Vol. 108 (10) , 105001
Parity anomaly with impurities and the Pauli-Villars subtraction
We calculate the anomalous part of the polarization tensor of Dirac fermions in dimensions in the presence of impurities described by the scattering rate for arbitrary external frequency and momenta. We consider two different versions of the Pauli-Villars subtractions and discuss their physical consequences.- 2 November 2023
- Published by American Physical Society (APS) in Physical Review D
- Vol. 108 (10) , 105001
Open AccessParity anomaly with impurities and the Pauli-Villars subtraction
We calculate the anomalous part of the polarization tensor of Dirac fermions in dimensions in the presence of impurities described by the scattering rate for arbitrary external frequency and momenta. We consider two different versions of the Pauli-Villars subtractions and discuss their physical consequences. - Open Access
- 1 January 2022
- Published by Elsevier in Nuclear Physics B
- Vol. 974
Gribov horizon in Noncommutative QED
- 1 January 2022
- Published by Elsevier in Nuclear Physics B
- Vol. 974
Open AccessGribov horizon in Noncommutative QED
- Open Access
- 8 October 2020
- Published by American Physical Society (APS) in Physical Review D
- Vol. 102 (7) , 075008
Radiatively corrected Kaluza-Klein masses in an aether compactification
We address the issue of radiative corrections to Kaluza-Klein (KK) masses in five-dimensional quantum electrodynamics (QED) supplemented by aether Lorentz-violating terms. Specifically, we compute the corrections to the Kaluza-Klein (KK) photon masses from one fermion loop. In general, the KK masses receive radiative corrections due to breaking the five-dimensional Lorentz invariance by compactification. As we show, the presence of the additional Lorentz violating factor, an aether background, leads to the nontrivial modification of these corrections. This model may be of interest in addressing important phenomenological issues such as the relation between radiative corrected KK mass splitting of a particular mode and uncertainties in the measurements and/or possible spatial variation of the fine-structure constant. For the recent data on the fine-structure constant, we find a KK mass splitting of magnitude for the first excited Kaluza-Klein gauge boson at TeV scale. On the other hand, the large KK modes limit displays a very interesting phenomenon, showing the very special role of the aether in protecting the higher modes from the quantum corrections.- 8 October 2020
- Published by American Physical Society (APS) in Physical Review D
- Vol. 102 (7) , 075008
Open AccessRadiatively corrected Kaluza-Klein masses in an aether compactification
We address the issue of radiative corrections to Kaluza-Klein (KK) masses in five-dimensional quantum electrodynamics (QED) supplemented by aether Lorentz-violating terms. Specifically, we compute the corrections to the Kaluza-Klein (KK) photon masses from one fermion loop. In general, the KK masses receive radiative corrections due to breaking the five-dimensional Lorentz invariance by compactification. As we show, the presence of the additional Lorentz violating factor, an aether background, leads to the nontrivial modification of these corrections. This model may be of interest in addressing important phenomenological issues such as the relation between radiative corrected KK mass splitting of a particular mode and uncertainties in the measurements and/or possible spatial variation of the fine-structure constant. For the recent data on the fine-structure constant, we find a KK mass splitting of magnitude for the first excited Kaluza-Klein gauge boson at TeV scale. On the other hand, the large KK modes limit displays a very interesting phenomenon, showing the very special role of the aether in protecting the higher modes from the quantum corrections. - Open Access
- 28 February 2020
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2020 (2) , 1-39
Gauge-invariant spectral description of the U (1) Higgs model from local composite operators
The spectral properties of a set of local gauge-invariant composite operators are investigated in the U(1) Higgs model quantized in the ’t Hooft Rξ gauge. These operators enable us to give a gauge-invariant description of the spectrum of the theory, thereby surpassing certain incommodities when using the standard elementary fields. The corresponding two-point correlation functions are evaluated at one-loop order and their spectral functions are obtained explicitly. As expected, the above mentioned correlation functions are independent from the gauge parameter ξ, while exhibiting positive spectral densities as well as gauge-invariant pole masses corresponding to the massive photon and Higgs physical excitations.
- 28 February 2020
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2020 (2) , 1-39
Open AccessGauge-invariant spectral description of the U (1) Higgs model from local composite operators
The spectral properties of a set of local gauge-invariant composite operators are investigated in the U(1) Higgs model quantized in the ’t Hooft Rξ gauge. These operators enable us to give a gauge-invariant description of the spectrum of the theory, thereby surpassing certain incommodities when using the standard elementary fields. The corresponding two-point correlation functions are evaluated at one-loop order and their spectral functions are obtained explicitly. As expected, the above mentioned correlation functions are independent from the gauge parameter ξ, while exhibiting positive spectral densities as well as gauge-invariant pole masses corresponding to the massive photon and Higgs physical excitations.
- Open AccessGauge-invariant spectral description of the $U(1)$ Higgs model from local composite operatorsThe spectral properties of a set of local gauge-invariant composite operators are investigated in the $U(1)$ Higgs model quantized in the 't Hooft $R_{\xi}$ gauge. These operators enable us to give a gauge-invariant description of the spectrum of the theory, thereby surpassing certain incommodities when using the standard elementary fields. The corresponding two-point correlation functions are evaluated at one-loop order and their spectral functions are obtained explicitly. As expected, the above mentioned correlation functions are independent from the gauge parameter $\xi$, while exhibiting positive spectral densities as well as gauge-invariant pole masses corresponding to the massive photon and Higgs physical excitations.Open AccessGauge-invariant spectral description of the $U(1)$ Higgs model from local composite operatorsThe spectral properties of a set of local gauge-invariant composite operators are investigated in the $U(1)$ Higgs model quantized in the 't Hooft $R_{\xi}$ gauge. These operators enable us to give a gauge-invariant description of the spectrum of the theory, thereby surpassing certain incommodities when using the standard elementary fields. The corresponding two-point correlation functions are evaluated at one-loop order and their spectral functions are obtained explicitly. As expected, the above mentioned correlation functions are independent from the gauge parameter $\xi$, while exhibiting positive spectral densities as well as gauge-invariant pole masses corresponding to the massive photon and Higgs physical excitations.
- Open Access
- 16 September 2019
- Published by American Physical Society (APS) in Physical Review D
- Vol. 100 (6) , 065009
Some remarks on the spectral functions of the Abelian Higgs model
We consider the unitary Abelian Higgs model and investigate its spectral functions at one-loop order. This analysis allows us to disentangle what is physical and what is not at the level of the elementary particle propagators, in conjunction with the Nielsen identities. We highlight the role of the tadpole graphs and the gauge choices to get sensible results. We also introduce an Abelian Curci-Ferrari action coupled to a scalar field to model a massive photon which, like the non-Abelian Curci-Ferarri model, is left invariant by a modified non-nilpotent BRST symmetry. We clearly illustrate its nonunitary nature directly from the spectral function viewpoint. This provides a functional analogue of the Ojima observation in the canonical formalism: there are ghost states with nonzero norm in the BRST-invariant states of the Curci-Ferrari model.
- 16 September 2019
- Published by American Physical Society (APS) in Physical Review D
- Vol. 100 (6) , 065009
Open AccessSome remarks on the spectral functions of the Abelian Higgs model
We consider the unitary Abelian Higgs model and investigate its spectral functions at one-loop order. This analysis allows us to disentangle what is physical and what is not at the level of the elementary particle propagators, in conjunction with the Nielsen identities. We highlight the role of the tadpole graphs and the gauge choices to get sensible results. We also introduce an Abelian Curci-Ferrari action coupled to a scalar field to model a massive photon which, like the non-Abelian Curci-Ferarri model, is left invariant by a modified non-nilpotent BRST symmetry. We clearly illustrate its nonunitary nature directly from the spectral function viewpoint. This provides a functional analogue of the Ojima observation in the canonical formalism: there are ghost states with nonzero norm in the BRST-invariant states of the Curci-Ferrari model.
- Open Access
Some remarks on the spectral functions of the Abelian Higgs Model
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 level of the elementary particle propagators, in conjunction with the Nielsen identities. We highlight the role of the tadpole graphs and the gauge choices to get sensible results. We also introduce an Abelian Curci-Ferrari action coupled to a scalar field to model a massive photon which, like the non-Abelian Curci-Ferarri model, is left invariant by a modified non-nilpotent BRST symmetry. We clearly illustrate its non-unitary nature directly from the spectral function viewpoint. This provides a functional analogue of the Ojima observation in the canonical formalism: there are ghost states with nonzero norm in the BRST-invariant states of the Curci-Ferrari model.
Open AccessSome remarks on the spectral functions of the Abelian Higgs Model
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 level of the elementary particle propagators, in conjunction with the Nielsen identities. We highlight the role of the tadpole graphs and the gauge choices to get sensible results. We also introduce an Abelian Curci-Ferrari action coupled to a scalar field to model a massive photon which, like the non-Abelian Curci-Ferarri model, is left invariant by a modified non-nilpotent BRST symmetry. We clearly illustrate its non-unitary nature directly from the spectral function viewpoint. This provides a functional analogue of the Ojima observation in the canonical formalism: there are ghost states with nonzero norm in the BRST-invariant states of the Curci-Ferrari model.
- Open Access
- 1 October 2018
- Published by Springer Nature in The European Physical Journal C
- Vol. 78 (10) , 797
Renormalizability of ${\mathcal {N}}=1$ N = 1 super Yang–Mills theory in Landau gauge with a Stueckelberg-like field- 1 October 2018
- Published by Springer Nature in The European Physical Journal C
- Vol. 78 (10) , 797
Open AccessRenormalizability of ${\mathcal {N}}=1$ N = 1 super Yang–Mills theory in Landau gauge with a Stueckelberg-like field - Open AccessRenormalizability of $\mathcal{N}=1$ super Yang-Mills theory in Landau gauge with a Stueckelberg-like fieldWe construct a vector gauge invariant transverse field configuration $V^H$, consisting of the well-known superfield $V$ and of a Stueckelberg-like chiral superfield. The renormalizability of the Super Yang Mills action in the Landau gauge is analyzed in the presence of a gauge invariant mass term $m^2 \int dV \mathcal{M}(V^H)$, with $\mathcal{M}(V^H)$ a power series in $V^H$. Unlike the original Stueckelberg action, the resulting action turns out to be renormalizable to all orders.Open AccessRenormalizability of $\mathcal{N}=1$ super Yang-Mills theory in Landau gauge with a Stueckelberg-like fieldWe construct a vector gauge invariant transverse field configuration $V^H$, consisting of the well-known superfield $V$ and of a Stueckelberg-like chiral superfield. The renormalizability of the Super Yang Mills action in the Landau gauge is analyzed in the presence of a gauge invariant mass term $m^2 \int dV \mathcal{M}(V^H)$, with $\mathcal{M}(V^H)$ a power series in $V^H$. Unlike the original Stueckelberg action, the resulting action turns out to be renormalizable to all orders.