PT4 - Variation of the fundamental constants, violation of the fundamental symmetries and dark matter |
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Speaker |
Spallicci , Alessandro D.A.M. |
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Coauthors |
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| Talk Title |
Photons in massive and non-linear theories |
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Abstract |
Photons are the messengers from the Universe. Inexplicable observations on the latter prompt cosmologists to propose ingredients like dark matter, dark energy or the cosmological constant maintaining general relativity entirely valid, or else to propose alternatives to the non-linear theory of gravitation, namely general relativity, without evoking new ingredients. Confronted with this dichotomy, we consider legitimate also to investigate on the nature of the messengers, being the photon the sole massless particle of the Standard Model, and the waves emerging from a linear theory of the XIX century. Results on testing non-Maxwellian electromagnetism (either massive initiated by de Broglie and Proca or non-linear by Born and Infeld, Heisenberg and Euler) include setting photon mass upper limits from the modified Ampère’s law in solar wind through Cluster spacecraft [7], or from frequency dependent group velocities of photons from Fast Radio Bursts [2,5], and planned nanosatellites swarms operating in a new radio astronomy window, 10 KHz – 10 MHz, [1]. An effective photon mass emerges when Super and Lorentz symmetries are broken, as well as [3]. Non-linear effects as polarisation dependent frequency shifts in strong magnetic field in Magnetars have been analysed too [6]. de Broglie formulated a photon mass already in 1922 and in the later year he estimated such mass to be lower than 10-53 kg, surprisingly close to the actual limits established by the Particle Data Group. Analysis of his work on the particle-wave duality will be a fundamental obligation in these studies. We are now completing our results in SuSy and Lorentz symmetry breaking where we find bi-refringence and dissipation and searching the conditions for photon mass and energy dissipation in a non-linear classic formalism. [1] Bentum M.J., Bonetti L., Spallicci A.D.A.M., 2017. Adv. Sp. Res., 59, 736. [2] Bonetti L., Ellis J., Mavromatos N.E., Sakharov A.S., Sarkisyan-Grinbaum E.K.G., Spallicci A.D.A.M., 2016. Phys. Lett. B, 757, 548. [3] Bonetti L., dos Santos Filho L.R., Helayël-Neto J.A., Spallicci A.D.A.M., 2017. Phys. Lett. B, 764, 203. [4] Bonetti L., dos Santos Filho L.R., Helayël-Neto J.A., Spallicci A.D.A.M., 2017. arXiv:1709.04995 [5] Bonetti L., Ellis J., Mavromatos N.E., Sakharov A.S., Sarkisyan-Grinbaum E.K.G., Spallicci A.D.A.M., 2017. Phys. Lett. B, 768, 326. [6] Bonetti L., Perez Bergliaffa S.E., Spallicci A.D.A.M., 2017, 14 M. Grossmann, World Scientific, arXiv:1610.05655 [astro-ph.HE]. [7] Retinò A., Spallicci A.D.A.M., Vaivads A., 2016. Astropart. Phys., 82, 49. |
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