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physics.hist-ph2025
Is Gravity Truly Balanced? A Historical-Critical Journey Through the Equivalence Principle and the Genesis of Spacetime Geometry
Jaume de Haro, Emilio Elizalde
We present a novel derivation of the spacetime metric generated by matter, without invoking Einstein's field equations. For static sources, the metric arises from a relativistic fo…
gr-qc2025
On the Geometric Meaning of General Relativity and the Foundations of Newtonian Cosmology
Jaume de Haro, Emilio Elizalde
The geometric foundations of General Relativity are revisited, with particular attention to its gauge invariance, as a key to understanding the true nature of spacetime. Beyond the…