Surface Tension: Accelerated Expansion, Coincidence Problem & Hubble Tension

Abstract

In this paper we give a physical explanation to the accelerated expansion of the Universe, alleviating the tension between the discrepancy of Hubble constant measurements. By the Euler Cauchy stress principle, we identify a controversy on the lack of consideration of the surface forces contemplated in the study of the expansion of the Universe. We distinguish a new effect that modifies the spacetime fabric by means of the energy conservation equation. The resulting dynamical equations from the proposed hypothesis are contrasted to several testable astrophysical predictions. This paper also explains why we have not found any particle or fluid responsible for dark energy and clarifies the Cosmological Coincidence Problem. These explanations are achieved without assuming the existence of exotic matter of unphysical meaning or having to modify the Einstein's Field Equations.

arXiv comment15 pages, 5 figures, IJMPD Accepted

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Cited by in corpus (6)

• In the Realm of the Hubble tension $-$ a Review of Solutions
• Challenges for $\Lambda$CDM: An update
• Surface Tension of Cosmic Voids as a Possible Source for Dark Energy
• Gravitational friction from d'Alembert's principle
• Gravitational Surface Tension as the Origin for the Black Hole Entropy
• Cosmic acceleration driven by dark matter self-interactions: a phenomenological treatment