Low-redshift BAO without dark components: testing the TCR-Cosmo model
Description
This preprint presents TCR-Cosmo, a cosmological model deposited to establish priority and guarantee open access.
Built upon the relational and pre-spatiotemporal ontology of the Teoria della Coesistenza Relazionale (TCR), TCR-Cosmo departs from the standard ΛCDM paradigm by not requiring cold dark matter or dark energy to explain late-time cosmic acceleration. Instead, the observed dynamics emerge from the relational lapse and the growth of cosmic voids, moderated by collapsed structures such as galaxies and black holes.
Using the same official datasets employed in ΛCDM analyses—cosmic chronometers (CC), type Ia supernovae (SN), and baryon acoustic oscillations (BAO)—the model is quantitatively tested at low redshift. Results show that TCR-Cosmo achieves a global fit comparable to ΛCDM and performs slightly better for low-redshift BAO measurements.
TCR-Cosmo should not be interpreted as a mere variant within the spatiotemporal framework of general relativity, but as a complementary approach grounded in an upstream ontology: spacetime itself emerges from a primordial relational domain (R′). In this perspective, apparent acceleration is not the signal of hypothetical dark components, but the macroscopic manifestation of relational variations.
The model is presented as an open research program: it provides a falsifiable framework, preliminary predictions for precision cosmology, and a transparent methodology designed for reproducibility. Future developments will address the high-redshift regime and structure formation, with the goal of building a complete cosmological model without dark components.
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TCR-Cosmo4.pdf
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Additional details
Related works
- Is derived from
- Preprint: 10.5281/zenodo.17151668 (DOI)
Software
- Repository URL
- https://github.com/Pietro80/TCR-Cosmo
- Programming language
- Python
- Development Status
- Active
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