Joao Guilherme Ferreira Campos

@upe.br

Professor, Materials Physics Department
Universidade de Pernambuco

Joao Guilherme Ferreira Campos


                        Download Compact PDF  
https://researchid.co/joaogfc

EDUCATION

I obtained a Bachelor's degree in Physics from Universidade Federal de Pernambuco (UFPE) in 2013. I obtained a Master's degree in Physics from UFPE in 2018. I also obtained a PhD in Physics from UFPE in 2022. I worked as a postdoc for one year at Universidade Federal da Paraíba and for another year at UFPE. I worked for three months as a Physics Professor at Universidade Federal do maranhão. Since 2024, I am holding a full professor position at Universidade de Pernambuco.

RESEARCH, TEACHING, or OTHER INTERESTS

Nuclear and High Energy Physics
17

Scopus Publications

363

Scholar Citations

11

Scholar h-index

14

Scholar i10-index

Scopus Publications

  • Resonance with quasinormal modes in long-range kinks’ collisions
    J. G. F. Campos, A. Mohammadi, T. Romanczukiewicz
    European Physical Journal C, 2026
    We consider a rational scalar field model in (1+1)-dimensions where the long-range character of the kinks is controllable. We show via numerical simulations that kinks with long-range tails on both sides can exhibit resonance windows. The resonant energy exchange mechanism occurs via the excitation of quasinormal modes, which we obtain via a spectral analysis. Additionally, we locate a resonance window in a family of $$\\phi ^{10}$$ ϕ 10 models with long-range tails on both sides. Moreover, we propose a new algorithm for initializing long-range kink collisions, based on convection–diffusion dynamics.
  • Collective coordinates method for long-range kink collisions
    J. G. F. Campos, A. Mohammadi, T. Romanczukiewicz
    Journal of High Energy Physics, 2025
    In this paper, we explored a class of potentials with three minima that support kink solutions exhibiting one long-range tail. We analyzed antikink-kink interactions using an effective Lagrangian based on collective coordinates and compared the results to those obtained from full dynamical simulations. To this end, we constructed the collective coordinates with the antikink-kink configuration, and also a generalized Derrick mode, choosing the kink position and the Derrick mode amplitude as the moduli. For the antikink-kink configuration, we utilized the impurity ansatz proposed in [1]. We also studied the interaction of wobbling kinks where the lowest delocalized mode is excited.
  • On the localized and delocalized modes in kink-antikink interactions: a toy model
    Carlos E. S. Santos, João G. F. Campos, Azadeh Mohammadi
    Journal of High Energy Physics, 2025
    This study deals with a piecewise ϕ 2 scalar field theory in (1 + 1) dimensions. The scalar field potential is designed with a triple-well shape, engendering kink solutions with asymmetric square-well linearized potentials. Thus, the localized and delocalized modes in this model can be obtained analytically in terms of transcendental equations. This allows us to explore kink-antikink and antikink-kink collisions with any desired number of localized and delocalized modes. We obtain new scenarios of resonance windows suppression, shedding light on the role of higher excited modes in kink scattering.
  • Abelian Chern-Simons vortices in the presence of magnetic impurities
    D. Bazeia, J. G. F. Campos, A. Mohammadi
    Journal of High Energy Physics, 2024
    This work deals with Abelian Chern-Simons vortices interacting with magnetic impurities. We compute static solutions with winding numbers zero and one. Then, we develop a numerical algorithm to simulate their collisions. Collisions between a vortex with winding number two and a magnetic impurity are also performed. All scattering results are interpreted in terms of the moduli space approximation and compared with the Abelian Maxwell-Higgs model.
  • Collisions between kinks with long-range tails: a simple and efficient method
    João G. F. Campos, Azadeh Mohammadi
    Journal of High Energy Physics, 2024
    We construct initial configurations for the scattering between kinks with long-range tails. For this purpose, we exploit kink solutions in the presence of Bogomol’nyi-Prasad-Sommerfield (BPS)-preserving impurities. This approach offers a highly efficient method and effortless implementation with a negligible computational cost. Our algorithm has a much smaller complexity than the usual minimization method, becoming more than a hundred times faster in some scenarios. Consequently, conducting kink-antikink simulations becomes remarkably straightforward.
  • Kink scattering in the presence of geometric constrictions
    João G. F. Campos, Fabiano C. Simas, D. Bazeia
    Journal of High Energy Physics, 2023
    We investigate kink-antikink collisions in a model characterized by two scalar fields in the presence of geometric constrictions. The model includes an auxiliary function that modifies the kinematics associated with one of the two fields. An important fact is that one of the fields can be solved independently, being responsible for changing the internal structure of the second one. We performed several collisions and observed the presence of resonance windows for small values of the parameters. Furthermore, we have been able to show the alternation between the appearance of oscillating pulses, as well as the annihilation and formation of kink-antikink pairs when the geometric constriction is more pronounced. The study of kink dynamics in models with geometric constrictions is connected with issues of interest such as domain wall formation and magnetization at the manometric scale.
  • Kink-antikink collisions in the ϕ 8 model: short-range to long-range journey
    Dionisio Bazeia, João G. F. Campos, Azadeh Mohammadi
    Journal of High Energy Physics, 2023
    We studied kink-antikink collisions in (1+1)-dimensional spacetime for all Z2 symmetric ϕ8 models with four degenerate minima. Such a polynomial model has only one free parameter, allowing us to conduct an exhaustive analysis. We performed detailed simulations in all three sectors of the model. We observed resonance windows from both localized and delocalized modes, as well as a sector change with the formation of additional kink-antikink pairs. Furthermore, we were able to show how collisions are modified when two quadratic minima merge into a quartic one, causing the kinks to acquire a long-range character. We demonstrated that when the tail not facing the opposing kink is long-range, incoming kinks and antikinks decay directly into radiation, as suggested in [1], by forming a large number of small kink-antikink pairs. Finally, we briefly discussed whether our analysis could be generalized to other polynomial models.
  • Fermionic spectral walls in kink collisions
    J. G. F. Campos, A. Mohammadi, J. M. Queiruga, A. Wereszczynski, W. J. Zakrzewski
    Journal of High Energy Physics, 2023
    We show that a spectral wall, i.e., an obstacle in the dynamics of a bosonic soliton, which arises due to the transition of a normal mode into the continuum spectrum, exists after coupling the original bosonic model to fermions. This spectral wall can be experienced if the boson or fermion field is in an excited state. Furthermore, while passing through a spectral wall, an incoming kink-fermion bound state can be separated into purely bosonic kink, which continues to move to spatial infinity and a fermionic cloud that spreads in the region before the wall.
  • Resonance mediated by fermions in kink-antikink collisions
    Dionisio Bazeia, João G. F. Campos, Azadeh Mohammadi
    Journal of High Energy Physics, 2022
    We investigate generalizations of the ϕ4 and sine-Gordon models, including interactions with Dirac Fermions. We observe new resonance phenomena by taking the fermion back-reaction into account. First, we show that the vibrational mode responsible for the resonance structure of the ϕ4 model has the same frequency as the energy of the fermion excited state when the back-reaction becomes more significant. Second, we consider the sine-Gordon model with the addition of a fermion field and find that a resonant structure appears, despite the absence of a scalar vibrational mode. The vibrational frequency of the mode responsible for the exchange mechanism is again the energy of the fermion excited state. Therefore, we find a new type of resonant energy exchange mechanism which is mediated by fermions.
  • Kink-antikink collision in the supersymmetric Φ4 model
    João G.F. Campos, Azadeh Mohammadi
    Journal of High Energy Physics, 2022
    This paper investigates a model containing 𝜙4 kinks interacting with fermions. The fermion back-reaction is included in the equations of motion, which affects the kink-antikink collisions. We show that the fermion field generates a force that can be either attractive or repulsive. Moreover, we investigate three different scenarios, which exhibit a wide variety of behaviors, including the usual scenarios observed in the 𝜙4 model as well as the formation of two oscillons, reflection without contact, one-bounce resonance windows, and the creation of kink-antikink pairs. We also find evidence that the fermion field can store part of the energy responsible for the energy exchange mechanism.
  • Fermions on wobbling kinks: normal versus quasinormal modes
    João G. F. Campos, Azadeh Mohammadi
    Journal of High Energy Physics, 2021
  • Wobbling double sine-Gordon kinks
    João G. F. Campos, Azadeh Mohammadi
    Journal of High Energy Physics, 2021
  • Interaction between kinks and antikinks with double long-range tails
    João G.F. Campos, Azadeh Mohammadi
    Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 2021
  • Fermion transfer in the φ4 model with a half-BPS preserving impurity
    João G. F. Campos, Azadeh Mohammadi
    Physical Review D, 2020
  • Quasinormal modes in kink excitations and kink–antikink interactions: a toy model
    João G. F. Campos, Azadeh Mohammadi
    European Physical Journal C, 2020
  • Stochastic oscillations and dragon king avalanches in self-organized quasi-critical systems
    Osame Kinouchi, Ludmila Brochini, Ariadne A. Costa, João Guilherme Ferreira Campos, Mauro Copelli
    Scientific Reports, 2019
  • Correlations induced by depressing synapses in critically self-organized networks with quenched dynamics
    João Guilherme Ferreira Campos, Ariadne de Andrade Costa, Mauro Copelli, Osame Kinouchi
    Physical Review E, 2017

RECENT SCHOLAR PUBLICATIONS

  • Collision Dynamics of False-Vacuum Oscillons
    JGF Campos, NS Manton, A Mohammadi
    arXiv preprint arXiv:2605.12633 , 2026
    2026
  • Resonance with quasinormal modes in long-range kinks’ collisions
    JGF Campos, A Mohammadi, T Romanczukiewicz
    The European Physical Journal C 86 (1), 90 , 2026
    2026
    Citations: 4
  • Collective coordinates method for long-range kink collisions
    JGF Campos, A Mohammadi, T Romanczukiewicz
    Journal of High Energy Physics 2025 (1), 166 , 2025
    2025
    Citations: 6
  • On the localized and delocalized modes in kink-antikink interactions: a toy model
    CES Santos, JGF Campos, A Mohammadi
    Journal of High Energy Physics 2025 (1), 35 , 2025
    2025
    Citations: 1
  • Abelian Chern-Simons vortices in the presence of magnetic impurities
    D Bazeia, JGF Campos, A Mohammadi
    Journal of High Energy Physics 2024 (12), 108 , 2024
    2024
    Citations: 10
  • Collisions between kinks with long-range tails: a simple and efficient method
    JGF Campos, A Mohammadi
    Journal of High Energy Physics 2024 (2), 1-13 , 2024
    2024
    Citations: 11
  • Kink scattering in the presence of geometric constrictions
    JGF Campos, FC Simas, D Bazeia
    Journal of High Energy Physics 2023 (10), 1-25 , 2023
    2023
    Citations: 12
  • Kink-antikink collisions in the ϕ8 model: short-range to long-range journey
    D Bazeia, JGF Campos, A Mohammadi
    Journal of High Energy Physics 2023 (5), 116 , 2023
    2023
    Citations: 26
  • Fermionic spectral walls in kink collisions
    JGF Campos, A Mohammadi, JM Queiruga, A Wereszczynski, ...
    Journal of High Energy Physics 2023 (1), 71 , 2023
    2023
    Citations: 24
  • Resonance mediated by fermions in kink-antikink collisions
    D Bazeia, JGF Campos, A Mohammadi
    Journal of High Energy Physics 2022 (12), 1-20 , 2022
    2022
    Citations: 17
  • Kink-antikink collision in the supersymmetric 𝜙4 model
    JGF Campos, A Mohammadi
    Journal of High Energy Physics 2022 (8), 180 , 2022
    2022
    Citations: 14
  • Interactions between topological defects in (1+ 1) dimensions
    JGF Campos
    arXiv preprint arXiv:2204.05834 , 2022
    2022
  • Fermions on wobbling kinks: normal versus quasinormal modes
    JGF Campos, A Mohammadi
    Journal of High Energy Physics 2021 (9), 1-19 , 2021
    2021
    Citations: 10
  • Wobbling double sine-Gordon kinks
    JGF Campos, A Mohammadi
    Journal of High Energy Physics 2021 (9), 1-20 , 2021
    2021
    Citations: 39
  • Interaction between kinks and antikinks with double long-range tails
    JGF Campos, A Mohammadi
    Physics Letters B 818, 136361 , 2021
    2021
    Citations: 48
  • Fermion transfer in the model with a half-BPS preserving impurity
    JGF Campos, A Mohammadi
    Physical Review D 102 (4), 045003 , 2020
    2020
    Citations: 18
  • Quasinormal modes in kink excitations and kink–antikink interactions: a toy model
    JGF Campos, A Mohammadi
    The European Physical Journal C 80 (5), 352 , 2020
    2020
    Citations: 32
  • Stochastic oscillations and dragon king avalanches in self-organized quasi-critical systems
    O Kinouchi, L Brochini, AA Costa, JGF Campos, M Copelli
    Scientific reports 9 (1), 3874 , 2019
    2019
    Citations: 56
  • Hovering stochastic oscillations in self-organized critical systems
    O Kinouchi, L Brochini, AA Costa, JGF Campos, M Copelli
    arXiv preprint arXiv:1803.05537 , 2018
    2018
    Citations: 1
  • Coexistence of oscillations and neuronal avalanches in spiking neurons networks
    O Kinouchi, AA Costa, L Brochini, JGF Campos, M Copelli
    Poster , 2018
    2018

MOST CITED SCHOLAR PUBLICATIONS

  • Stochastic oscillations and dragon king avalanches in self-organized quasi-critical systems
    O Kinouchi, L Brochini, AA Costa, JGF Campos, M Copelli
    Scientific reports 9 (1), 3874 , 2019
    2019
    Citations: 56
  • Interaction between kinks and antikinks with double long-range tails
    JGF Campos, A Mohammadi
    Physics Letters B 818, 136361 , 2021
    2021
    Citations: 48
  • Wobbling double sine-Gordon kinks
    JGF Campos, A Mohammadi
    Journal of High Energy Physics 2021 (9), 1-20 , 2021
    2021
    Citations: 39
  • Correlations induced by depressing synapses in critically self-organized networks with quenched dynamics
    JGF Campos, AA Costa, M Copelli, O Kinouchi
    Physical Review E 95 (4), 042303 , 2017
    2017
    Citations: 34
  • Quasinormal modes in kink excitations and kink–antikink interactions: a toy model
    JGF Campos, A Mohammadi
    The European Physical Journal C 80 (5), 352 , 2020
    2020
    Citations: 32
  • Kink-antikink collisions in the ϕ8 model: short-range to long-range journey
    D Bazeia, JGF Campos, A Mohammadi
    Journal of High Energy Physics 2023 (5), 116 , 2023
    2023
    Citations: 26
  • Fermionic spectral walls in kink collisions
    JGF Campos, A Mohammadi, JM Queiruga, A Wereszczynski, ...
    Journal of High Energy Physics 2023 (1), 71 , 2023
    2023
    Citations: 24
  • Fermion transfer in the model with a half-BPS preserving impurity
    JGF Campos, A Mohammadi
    Physical Review D 102 (4), 045003 , 2020
    2020
    Citations: 18
  • Resonance mediated by fermions in kink-antikink collisions
    D Bazeia, JGF Campos, A Mohammadi
    Journal of High Energy Physics 2022 (12), 1-20 , 2022
    2022
    Citations: 17
  • Kink-antikink collision in the supersymmetric 𝜙4 model
    JGF Campos, A Mohammadi
    Journal of High Energy Physics 2022 (8), 180 , 2022
    2022
    Citations: 14
  • Kink scattering in the presence of geometric constrictions
    JGF Campos, FC Simas, D Bazeia
    Journal of High Energy Physics 2023 (10), 1-25 , 2023
    2023
    Citations: 12
  • Collisions between kinks with long-range tails: a simple and efficient method
    JGF Campos, A Mohammadi
    Journal of High Energy Physics 2024 (2), 1-13 , 2024
    2024
    Citations: 11
  • Abelian Chern-Simons vortices in the presence of magnetic impurities
    D Bazeia, JGF Campos, A Mohammadi
    Journal of High Energy Physics 2024 (12), 108 , 2024
    2024
    Citations: 10
  • Fermions on wobbling kinks: normal versus quasinormal modes
    JGF Campos, A Mohammadi
    Journal of High Energy Physics 2021 (9), 1-19 , 2021
    2021
    Citations: 10
  • Collective coordinates method for long-range kink collisions
    JGF Campos, A Mohammadi, T Romanczukiewicz
    Journal of High Energy Physics 2025 (1), 166 , 2025
    2025
    Citations: 6
  • Resonance with quasinormal modes in long-range kinks’ collisions
    JGF Campos, A Mohammadi, T Romanczukiewicz
    The European Physical Journal C 86 (1), 90 , 2026
    2026
    Citations: 4
  • On the localized and delocalized modes in kink-antikink interactions: a toy model
    CES Santos, JGF Campos, A Mohammadi
    Journal of High Energy Physics 2025 (1), 35 , 2025
    2025
    Citations: 1
  • Hovering stochastic oscillations in self-organized critical systems
    O Kinouchi, L Brochini, AA Costa, JGF Campos, M Copelli
    arXiv preprint arXiv:1803.05537 , 2018
    2018
    Citations: 1
  • Collision Dynamics of False-Vacuum Oscillons
    JGF Campos, NS Manton, A Mohammadi
    arXiv preprint arXiv:2605.12633 , 2026
    2026
  • Interactions between topological defects in (1+ 1) dimensions
    JGF Campos
    arXiv preprint arXiv:2204.05834 , 2022
    2022