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"
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
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
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
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
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
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
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
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
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