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| Natura: | Recurso digital |
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Zenodo
2026
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| Accesso online: | https://doi.org/10.5281/zenodo.19897603 |
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Sommario:
- <p>We develop a framework in which spacetime geometry is not fundamental but emerges as an effective description of signal propagation in a finite-response medium. In this approach, gravita­tional acceleration, inertial response, and cosmological observables arise from a single underlying structure characterized by density, phase, and a finite relaxation timescale.</p> <p> Linear perturbations propagate with a medium-dependent effective speed and flow field, defining an emergent causal structure that admits a metric representation in the coherent limit.</p> <p>Standard relativistic be­havior is recovered when the response is adiabatic, while controlled, scale-dependent deviations appear when finite-response effects become significant.</p> <p>We show that gravity, light propagation, redshift, inertia, and large-scale structure can be understood as unified consequences of propagation in an inhomogeneous medium, rather than as manifestations of fundamental spacetime curvature.</p> <p>The framework yields concrete observational signatures, including scale-dependent growth, environment-dependent effective coupling, and modified lensing behavior, providing a testable alternative to geometric cosmology.</p>