On the Interpretation of Cosmic Acceleration

Enrique Gaztanaga

doi:10.20944/preprints202309.0873.v5

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preprints.org > physical sciences > astronomy and astrophysics > doi: 10.20944/preprints202309.0873.v5

Preprint Article Version 5 Preserved in Portico This version is not peer-reviewed

On the Interpretation of Cosmic Acceleration

Enrique Gaztanaga

Version 1 : Received: 7 September 2023 / Approved: 13 September 2023 / Online: 13 September 2023 (10:05:21 CEST)
Version 2 : Received: 18 September 2023 / Approved: 18 September 2023 / Online: 25 September 2023 (04:49:46 CEST)
Version 3 : Received: 6 January 2024 / Approved: 8 January 2024 / Online: 8 January 2024 (06:37:58 CET)
Version 4 : Received: 27 January 2024 / Approved: 29 January 2024 / Online: 29 January 2024 (04:48:12 CET)
Version 5 : Received: 11 April 2024 / Approved: 11 April 2024 / Online: 12 April 2024 (04:53:47 CEST)

How to cite: Gaztanaga, E. On the Interpretation of Cosmic Acceleration. Preprints 2023, 2023090873. https://doi.org/10.20944/preprints202309.0873.v5 Gaztanaga, E. On the Interpretation of Cosmic Acceleration. Preprints 2023, 2023090873. https://doi.org/10.20944/preprints202309.0873.v5

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MDPI and ACS Style

Gaztanaga, E. On the Interpretation of Cosmic Acceleration. Preprints 2023, 2023090873. https://doi.org/10.20944/preprints202309.0873.v5

APA Style

Gaztanaga, E. (2024). On the Interpretation of Cosmic Acceleration. Preprints. https://doi.org/10.20944/preprints202309.0873.v5

Chicago/Turabian Style

Gaztanaga, E. 2024 "On the Interpretation of Cosmic Acceleration" Preprints. https://doi.org/10.20944/preprints202309.0873.v5

Abstract

The conventional measure of cosmic acceleration, denoted as $ q $, relies heavily on the frame of reference and operates within a 3D space-like coordinate system, potentially leading to misinterpretations of underlying physics. In this study, we propose a novel measure, $ q_E $, grounded in distances between causal events in 4D null space. We compare $ q_E $ with the standard $ q $ using observational data from supernovae (SN) and radial galaxy/quasar (QSO) clustering (BAO) to find a better alignment of data with $ q_E $. Our analysis indicates that cosmic expansion, when viewed in the rest frame, is decelerating, with events confined by an Event Horizon akin to that of a Black Hole interior. Rather than invoking new dark energy or modified gravity, we propose that $ \Lambda $ corresponds to a boundary term exerting an attractive influence, analogous to a rubber band resisting further expansion and preventing horizon crossing of events. Contrary to prevailing notions, interpreting current cosmic expansion measurements as deceleration, rather than acceleration, offers a more accurate depiction of observed phenomena and the underlying physics. This reevaluation prompts further investigation into the nature of cosmic expansion, as well as the exploration of alternative frameworks and measures in cosmology.

Keywords

Cosmology; Dark Energy; General Relativity; Black Holes; Cosmological Constant

Subject

Physical Sciences, Astronomy and Astrophysics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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