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Variable Fine Structure Constant from Maximal-Acceleration Phase Space Relativity

Carlos Castro
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Abstract

We presented a new physical model that links the maximum speed of light with the minimal Planck scale into a maximal-acceleration Relativity principle in the spacetime tangent bundle and in phase spaces (cotangent bundle). The maximal proper-acceleration bound is a = c^2/ Λin full agreement with the old predictions of Caianiello, the Finslerian geometry point of view of Brandt and more recent results in the literature. Inspired by the maximal-acceleration corrections to the Lamb shifts of one-electron atoms by Lambiase, Papini and Scarpetta, we derive the exact integral equation that governs the Renormalization-Group-like scaling dependence of the fractional change of the fine structure constant as a function of the cosmological redshift factor and a cutoff scale L_c, where the maximal acceleration relativistic effects are dominant. A particular physical model exists dominated entirely by the vacuum energy, when the cutoff scale is the Planck scale, with Ω_Λ\sim 1 . The implications of this extreme case scenario are studied.

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Carlos Castro. 2002-10-15. Variable Fine Structure Constant from Maximal-Acceleration Phase Space Relativity. https://doi.org/10.1142/s0217751x0301646x

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