Relational Gravity links Ni-62 nuclear coherence to DESI DR2 BAO and ISW measurements
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2025
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| _version_ | 1866902317329022976 |
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| author | Hummel, Erik Tobias |
| author_facet | Hummel, Erik Tobias |
| contents | <p><span>Scope and status.</span></p> <p><span>This record presents a conceptual and exploratory analysis within the Relational Gravity (RG) framework. The work is intended as foundational context rather than a finalized phenomenological or scalar-field theory, and it should not be interpreted as proposing a new competing cosmological model. Instead, it clarifies how a small late-time deviation from a cosmological-constant–like equation of state may arise from structural and informational considerations, without introducing new dynamical degrees of freedom.</span></p> <p><span>Conceptual content.</span></p> <p><span>The analysis explains how an effective deviation </span><span>\Delta w \approx +0.07</span><span> can emerge in RG from the combination of two ingredients: (i) a locally calibrated coherence–curvature relation, motivated by nuclear binding systematics (e.g. Ni-62), and (ii) a macro-level structural argument describing how externally coherent degrees of freedom are distributed across cosmic scales. Using the observed fractal dimension and small filling factor of the cosmic web, the framework motivates a sub-extensive coherence scaling of the form </span><span>I_{\mathrm{coh}}(a) \propto a^{\gamma}</span><span> with </span><span>\gamma \approx 0.2</span><span>. When mapped to an effective energy density, this scaling corresponds to an equation-of-state parameter </span><span>w \approx -1 + \gamma/3 \approx -0.93</span><span>. This construction is offered as a consistency argument rather than a parameter fit or predictive model.</span></p> <p><span>Relation to observations.</span></p> <p><span>The work compares this conceptual scaling with selected late-time observational summaries as a contextual consistency check. In particular, BAO-only anisotropic distance measurements from DESI DR2 (Table IV, excluding BGS; DESI Collaboration 2025) are used to illustrate that the resulting effective deviation is numerically compatible with current uncertainties. Standard </span><span>\Lambda</span><span>CDM rescalings and marginalised </span><span>w</span><span> extensions yield comparable goodness-of-fit values, indicating that the RG-motivated scaling is not in tension with existing data. Similar order-of-magnitude consistency is noted for reported ISW–LSS cross-correlation amplitudes and BAO-scale compression directions. These comparisons are illustrative and are not claimed as evidence for anomaly resolution or model preference.</span></p> <p><span>Reproducibility.</span></p> <p><span>All numerical analyses discussed in the accompanying manuscript are fully reproducible. This record archives the complete Overleaf-formatted PDF, along with the Python notebooks, configuration files, and computational environment required to regenerate the reported results within rounding accuracy.</span></p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_17570833 |
| institution | Zenodo |
| language | eng |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Relational Gravity links Ni-62 nuclear coherence to DESI DR2 BAO and ISW measurements Hummel, Erik Tobias relational gravity cosmology BAO ISW modified gravity nuclear physics quantum gravity DESI DR2 ΛCDM <p><span>Scope and status.</span></p> <p><span>This record presents a conceptual and exploratory analysis within the Relational Gravity (RG) framework. The work is intended as foundational context rather than a finalized phenomenological or scalar-field theory, and it should not be interpreted as proposing a new competing cosmological model. Instead, it clarifies how a small late-time deviation from a cosmological-constant–like equation of state may arise from structural and informational considerations, without introducing new dynamical degrees of freedom.</span></p> <p><span>Conceptual content.</span></p> <p><span>The analysis explains how an effective deviation </span><span>\Delta w \approx +0.07</span><span> can emerge in RG from the combination of two ingredients: (i) a locally calibrated coherence–curvature relation, motivated by nuclear binding systematics (e.g. Ni-62), and (ii) a macro-level structural argument describing how externally coherent degrees of freedom are distributed across cosmic scales. Using the observed fractal dimension and small filling factor of the cosmic web, the framework motivates a sub-extensive coherence scaling of the form </span><span>I_{\mathrm{coh}}(a) \propto a^{\gamma}</span><span> with </span><span>\gamma \approx 0.2</span><span>. When mapped to an effective energy density, this scaling corresponds to an equation-of-state parameter </span><span>w \approx -1 + \gamma/3 \approx -0.93</span><span>. This construction is offered as a consistency argument rather than a parameter fit or predictive model.</span></p> <p><span>Relation to observations.</span></p> <p><span>The work compares this conceptual scaling with selected late-time observational summaries as a contextual consistency check. In particular, BAO-only anisotropic distance measurements from DESI DR2 (Table IV, excluding BGS; DESI Collaboration 2025) are used to illustrate that the resulting effective deviation is numerically compatible with current uncertainties. Standard </span><span>\Lambda</span><span>CDM rescalings and marginalised </span><span>w</span><span> extensions yield comparable goodness-of-fit values, indicating that the RG-motivated scaling is not in tension with existing data. Similar order-of-magnitude consistency is noted for reported ISW–LSS cross-correlation amplitudes and BAO-scale compression directions. These comparisons are illustrative and are not claimed as evidence for anomaly resolution or model preference.</span></p> <p><span>Reproducibility.</span></p> <p><span>All numerical analyses discussed in the accompanying manuscript are fully reproducible. This record archives the complete Overleaf-formatted PDF, along with the Python notebooks, configuration files, and computational environment required to regenerate the reported results within rounding accuracy.</span></p> |
| title | Relational Gravity links Ni-62 nuclear coherence to DESI DR2 BAO and ISW measurements |
| topic | relational gravity cosmology BAO ISW modified gravity nuclear physics quantum gravity DESI DR2 ΛCDM |
| url | https://doi.org/10.5281/zenodo.17570833 |