Seventeenth Marcel Grossmann Meeting

Extended Theories of Electro-Magnetism for astrophysics and cosmology

8 Jul 2024, 15:00

30m

M1 (Palazzo Micara of the ‘Gabriele d’Annunzio’ University)

Invited talk in a parallel session Extended theories of electromagnetism and their impact on laboratory experiments and astrophysical observations Extended theories of electromagnetism and their impact on laboratory experiments and astrophysical observations

Speaker

Alessandro D.A.M. Spallicci (Université d'Orléans - Centre National de la Recherche Scientifique)

Description

Benetti M., Bentum M.-J., Bonetti L., Capozziello S., Dib A., Djeghloul N., dos Santos Filho L.R., Ellis J., Helayël-Neto J.A., Lämmerzahl C., López-Corredoira M., Mavromatos N.E., Perlick V., Randriamboarison O., Retinò A., Sakharov A.S., Sarkisyan-Grinbaum E.K.G., Sarracino G., Spallicci A.D.A.M., Vaivads A.

The ad-hoc dark Universe compatible to GR, faces the lack of experimental evidence and of identified candidate particles in the SM. Meanwhile, going beyond GR is also not observationally supported. Sice photons remain the main messengers of the cosmos, we analyse whether Generalised Theories of Electro-Magnetism induce a reinterpretation impacting cosmology. The SME induces a mass to a photon [1,2], the only SM free massless particle, compatible to the upper limits by FRBs [3-5] and solar wind [6,7]. The photons either SME or massive of the de Broglie-Proca type or non-linear of the Born-Infeld, Heisenberg-Euler type and even Maxwellian undergo a frequency shift in presence of EM and/or LSV backgrounds [8]. This shift, added to expansion redshift determines new cosmological scenarios, e.g., without recurring to the accelerated expansion [9-11] and possibly dark matter. Finally, we have applied the Heisenberg principle to cosmological scales, reading the Hubble-Humason-Lemaître constant as quantum measurement and reinterpreting the tension accordingly [12,13].

[1] 2017, Phys. Lett. B, 764, 203
[2] 2018, Eur. Phys. J. C, 78, 811
[3] 2016, Phys. Lett. B, 757, 548
[4] 2017, Phys. Lett. B, 768, 32
[5] 2017, Adv. Space Res., 59, 736
[6] 2016, Astropart. Phys., 82, 49
[7] 2024, arXiv:2205.02487 [hep-ph] to appear in Eur. Phys. J. Plus
[8] 2019, Eur. Phys. J. C, 79, 590
[9] 2021, Eur. Phys. J. C, 81, 4
[10] 2022, Eur. Phys. J. Plus, 137, 253
[11] 2022, Eur. Phys. J. Plus, 137, 1386
[12] 2020, Found. Phys. 50, 893
[13] 2022, Found. Phys. 52, 23