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Posts by Collection
portfolio
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publications
1. Affine quantization of the Brans-Dicke theory: Smooth bouncing and the equivalence between the Einstein and Jordan frames
Published in Physical Review D, 2018
First integral affine quantisation of a modified gravity theory.
Recommended citation: E. Frion and C.R. Almeida. "Affine quantization of the Brans-Dicke theory: Smooth bouncing and the equivalence between the Einstein and Jordan frames." Phys. Rev. D 99 (2019) 2, 023524. https://doi.org/10.1103/PhysRevD.99.023524
2. Stochastic collapse
Published in Journal of Cosmology and Astroparticle Physics, 2019
Implementation of stochastic noise in a contracting universe.
Recommended citation: T. Miranda, E. Frion and D. Wands. "Stochastic collapse." JCAP 01 (2020) 026 https://doi.org/10.1088/1475-7516/2020/01/026
3. Primordial Magnetogenesis in a Bouncing Universe
Published in Physical Review D, 2020
Generation of magnetic fields consistent with observations in a quantum bouncing model with dust.
Recommended citation: E. Frion, N. Pinto-Neto, S.D.P. Vitenti and S.E. Perez-Bergliaffa. "Primordial Magnetogenesis in a Bouncing Universe." Phys.Rev.D 101 (2020) 10, 103503 https://doi.org/10.1103/PhysRevD.101.103503
4. Testing the Equivalence Principle with strong lensing time delay variations
Published in Journal of Cosmology and Astroparticle Physics, 2020
Using redshift drifts effects to develop a probe of the gravitational coupling.
Recommended citation: L.Giani and E. Frion. "Testing the Equivalence Principle with strong lensing time delay variations." JCAP 09 (2020) 008 https://doi.org/10.1088/1475-7516/2020/09/008
5. Impact of inhomogeneities on slowly rolling quintessence: implications for the local variations of the fine-structure constant
Published in Classical and Quantum Gravity, 2021
Impact of spatial variation of the fine-structure constant and probe of Quintessence dark energy.
Recommended citation: L. Giani, E. Frion and O. Piattella. "Impact of inhomogeneities on slowly rolling quintessence: implications for the local variations of the fine-structure constant." Class.Quant.Grav. 38 (2021) 17, 175010 https://doi.org/10.1103/PhysRevD.99.023524
6. Black hole shadow drift and photon ring frequency drift
Published in Open Journal of Astrophysics, 2021
Impact of redshift drift on black hole shadow and photon rings. New probe of the gravitational coupling.
Recommended citation: E. Frion, L. Giani and T. Miranda. "Black hole shadow drift and photon ring frequency drift." Open J.Astrophys. 4 (2021) 1 https://astro.theoj.org/article/28209-black-hole-shadow-drift-and-photon-ring-frequency-drift
7. Quantum formalism on the plane: POVM-Toeplitz quantization, Naimark theorem and linear polarization of the light
Published in Annals of Physics, 2021
Application of integral quantisation to the plane.
Recommended citation: R. Beneduci, E. Frion, J.-P. Gazeau and A. Perri. "Quantum formalism on the plane: POVM-Toeplitz quantization, Naimark theorem and linear polarization of the light." Annals Phys. 447 (2022) 169134 https://doi.org/10.1103/PhysRevD.99.023524
8. Quantum description of angles in the plane
Published in Acta Polytechnica, 2021
Quantum entanglement and spin one-half coherent states in integral quantisation.
Recommended citation: R. Beneduci, E. Frion and J.-P. Gazeau. "Quantum description of angles in the plane." Acta Polytech. 62 (2022) 1, 8-15 https://doi.org/10.14311/AP.2022.62.0008
9. Bayesian analysis of a Unified Dark Matter model with transition: can it alleviate the \(H_0\) tension?
Published in Open Journal of Astrophysics, 2023
CMB and SN data prefer UDM models with slow transition. Mildly alleviates the Hubble tension.
Recommended citation: Emmanuel Frion, David Camarena, Leonardo Giani, Tays Miranda, Daniele Bertacca, Valerio Marra, Oliver F. Piattella. "Bayesian analysis of a Unified Dark Matter model with transition: can it alleviate the $H_0$ tension?" https://doi.org/10.21105/astro.2307.06320
10. Primordial magnetogenesis in a bouncing model with dark energy
Published in , 2024
Quantum bouncing model with scalar field and exponential potential can explain large-scale magnetic fields.
Recommended citation: M.V. Bomfim, E. Frion, N. Pinto-Neto, S.D.P. Vitenti. "Primordial magnetogenesis in a bouncing model with dark energy"
talks
Talk #4: Stochastic collapse
Published:
Talk #6: Stochastic collapse
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Talk #11: Bouncing cosmology from Loop Quantum Cosmology with ekpyrotic and matter fields
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Talk #13: Bouncing cosmology from Loop Quantum Cosmology with ekpyrotic and matter fields
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Talk #14: Bouncing cosmology from Loop Quantum Cosmology with ekpyrotic and matter fields
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teaching
Teaching assistant for graduate students
Lecture, Universidade Federal do Espírito Santo, Department of Physics, 2017
Courses: Quantum Mechanics, quantum aspects of black holes, \(3+1\) separation of General Relativity
Teaching assistant for undergraduate students
Lecture, Universidade Federal do Espírito Santo, Department of Physics, 2017
Course : Special relativity
Lecturer for undergraduate students
Lecture, Lycée Philippe Auguste, 2023
Course : Signal processing