24–28 Aug 2026
Leiden University
Europe/Zurich timezone

New tools for cosmology by Extended Theories of Electro-Magnetism (ETEM)

Not scheduled
20m
Gorlaeus gebouw (Leiden University)

Gorlaeus gebouw

Leiden University

Einsteinweg 55, 2333 CC Leiden
Talk Dark Energy / Modified Gravity

Speaker

Alessandro Spallicci (Université d'Orléans - CNRS)

Description

Compatible with General Relativity (GR), the dark Universe lacks experimental confirmation and support by the Standard Model (SM). Opposing darkness, extensions of GR face the successes of GR. But photons, main messengers, are still read with the XIX Maxwell theory, although Quantum Electro-Dynamics (QED) requires non-linear corrections, e.g., photon-photon. Extended Theories of Electro-Magnetism (ETEM) induce a reinterpretation of the observations. In presence of a background, the SM Extension (SME) or Non-Linear Electro-Magnetism dress the photon, the only SM free massless particle, with an effective mass [1-3], compatible with the upper limits from Fast Radio Bursts [4-6] and solar wind [7,8]. Birefringence, dispersion, second-order QED are tested or searched ETEM effects at, e.g., BMV Toulouse, ATLAS CERN, DeLLight Paris. All photons either massive - ab initio as in the de Broglie-Proca theory or through the SME or the Born-Infeld, Heisenberg-Euler non-linear type of theories - undergo a frequency shift in presence of an electromagnetic and/or a Lorentz Symmetry Violation background [9,10]. This small additional shift, towards the red or the blue, added to the expansion redshift, determines new cosmological scenarios, e.g., without dark energy and matter [11-14]. Interferometry guarantees testing perspectives [15,16] below 3x10-18 in Δν/ν per metre for an Earth-Moon-like optical length. We aim to determine a dissipative effect free from blurring due to the interaction of the photon energy with the curvature produced by an electromagnetic or gravitational field [17-20]. Finally, we implement the Heisenberg principle at cosmological istances, where the Hubble tension appears as quantum measurement limit [21,22].

References
[1] Bonetti L., dos Santos Filho L.R., Helayël-Neto J.A., Spallicci A.D.A.M., Phys. Lett. B, 764, 203 (2017)
[2] Bonetti L., dos Santos Filho L.R., Helayël-Neto J.A., Spallicci A.D.A.M., Eur. Phys. J. C, 78, 811 (2018)
[3] Dib A., Helayël-Neto J.A., Spallicci A.D.A.M., Eur. Phys. J. C, 86, 3 (2026)
[4] Bonetti L., Ellis J., Mavromatos N.E., Sakharov A.S., Sarkisyan-Grinbaum E.K.G., Spallicci A.D.A.M., Phys. Lett. B, 757, 548 (2016)
[5] Bonetti L., Ellis J., Mavromatos N.E., Sakharov A.S., Sarkisyan-Grinbaum E.K.G., Spallicci A.D.A.M., Phys. Lett. B, 768, 326 (2017)
[6] Bentum M.J., Bonetti L., Spallicci A.D.A.M., Adv. Space Res., 59, 736 (2017)
[7] Retinò A., Spallicci A.D.A.M., Vaivads A., Astropart. Phys., 82, 49 (2016)
[8] Spallicci A.D.A.M., Sarracino G., Randriamboarison O., Helayël-Neto J.A., Dib A., Eur. Phys. J. Plus, 139, 551 (2024)
[9] Helayël-Neto J.A., Spallicci A.D.A.M., Eur. Phys. J. C, 79, 590 (2019)
[10] Spallicci A.D.A.M., Dib A., Helayël-Neto J.A., Phys. Lett. B, 885, 138873 (2024).
[11] Spallicci A.D.A.M., Helayël-Neto J.A., López-Corredoira M., Capozziello S., Eur. Phys. J. C, 81, 4 (2021)
[12] Spallicci A.D.A.M., Sarracino G., Capozziello S., Eur. Phys. J. Plus, 137, 253 (2022)
[13] Sarracino G., Spallicci A.D.A.M., Capozziello S., Eur. Phys. J. Plus, 137, 1386 (2022)
[14] Dib A., Djeghloul N., Spallicci A.D.A.M., submitted
[15] Abend S. et al., AVS Quantum Sci., 6, 024701 (2024)
[16] Abdalla A. et al., Eur. Phys. J. Quantum Techn., 12, 42 (2025)
[17] Blanchet L., Spallicci A., Whiting B., Mass and motion in general relativity, Fundamental Theory of Physics 162 (Springer, 2011)
[18] Spallicci A.D.A.M., Ritter P., Aoudia S., Int. J. Geom. Meth. Mod. Phys., 11, 1450072 (2014)
[19] Ritter P., Aoudia S., Spallicci A.D.A.M., Cordier S., Int. J. Geom. Meth. Mod. Phys., 13, 1650019 (2016)
[20] Dib A., Garnier A., Spallicci A.D.A.M., to appear in Int. J. Geom. Meth. Mod. Phys. 10.1142/S0219887825502780 (2026)
[21] Capozziello S., Benetti M., Spallicci A.D.A.M., Found. Phys. 50, 893 (2020)
[22] Spallicci A.D.A.M., Benetti M., Capozziello S., Found. Phys. 52, 23 (2022)

Author

Alessandro Spallicci (Université d'Orléans - CNRS)

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