Theoretical and experimental basis for excluding Einstein-Cartan theory within the USMEG-EFT framework
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866912581391745024 |
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| author | Chishtie, Farrukh A. |
| author_facet | Chishtie, Farrukh A. |
| contents | The USMEG-EFT framework~\cite{ChishtieEFT2025,ChishtieBreakdown2023} provides systematic quantum gravity through with 4D General Relativity (GR) achieving Standard Model-gravity unification. This work examines Einstein-Cartan theory against McKeon et al.'s claims~\cite{BrandtFrenkelMcKeon2024,McKeonBrandtFrenkel2025} regarding its viability for unification. McKeon et al.'s 2024 analysis omitted key interaction terms, missing Einstein-Cartan's central content. Their 2025 claim that unification requires Einstein-Cartan is incorrect. When fermions are included, Einstein-Cartan generates non-renormalizable four-fermion interactions producing catastrophic quartic divergences $\sim κ^4Λ^4$. Precision experiments exclude the theory: MICROSCOPE constrains equivalence principle violations at $10^{-15}$ while Einstein-Cartan predicts $10^{-12}$ effects. In contrast to these claims, the USMEG-EFT framework achieves unification using standard 4D GR through constraints, producing finite results with calculable coefficients while remaining experimentally compatible. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2509_08848 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Theoretical and experimental basis for excluding Einstein-Cartan theory within the USMEG-EFT framework Chishtie, Farrukh A. General Physics General Relativity and Quantum Cosmology High Energy Physics - Theory The USMEG-EFT framework~\cite{ChishtieEFT2025,ChishtieBreakdown2023} provides systematic quantum gravity through with 4D General Relativity (GR) achieving Standard Model-gravity unification. This work examines Einstein-Cartan theory against McKeon et al.'s claims~\cite{BrandtFrenkelMcKeon2024,McKeonBrandtFrenkel2025} regarding its viability for unification. McKeon et al.'s 2024 analysis omitted key interaction terms, missing Einstein-Cartan's central content. Their 2025 claim that unification requires Einstein-Cartan is incorrect. When fermions are included, Einstein-Cartan generates non-renormalizable four-fermion interactions producing catastrophic quartic divergences $\sim κ^4Λ^4$. Precision experiments exclude the theory: MICROSCOPE constrains equivalence principle violations at $10^{-15}$ while Einstein-Cartan predicts $10^{-12}$ effects. In contrast to these claims, the USMEG-EFT framework achieves unification using standard 4D GR through constraints, producing finite results with calculable coefficients while remaining experimentally compatible. |
| title | Theoretical and experimental basis for excluding Einstein-Cartan theory within the USMEG-EFT framework |
| topic | General Physics General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2509.08848 |