Solving the Hubble Tension: The Extended Finsler Timescape-Lapse (EFT-Lapse) Theory

"Unified Geometry of Spacetime: Lapse-Modulated Dark Matter, Black Hole Regularization, and CPT-Symmetric Temporal Topology in Extended Finsler-Timescape-Wisconsin Cosmology" - with complete theoretical derivations, auxiliary calculations, numerical verification tables, Python/Mathematica submitted to Classical and Quantum Gravity

Extended Finsler Timescape-Lapse (EFT-Lapse) Theory is a working paper presenting a theoretical cosmology framework and its associated derivations and checks. Perplexity AI and Google Gemini were used to support literature discovery, drafting and refinement of the manuscript, formula/LaTeX development, and assistance with implementing/executing and cross-checking calculations; all outputs were reviewed, validated, and integrated by A. Backmund, who takes full responsibility for the scientific content and integrity of this work. This AI use is disclosed in the spirit of transparency and researcher responsibility as recommended by the European Commission’s “Living Guidelines on the Responsible Use of Generative AI in Research” (2025).

ACKNOWLEDGMENTS AND AI DISCLOSURE

The author thanks Perplexity AI and Google Gemini for research assistance in literature identification and manuscript refinement. Perplexity AI was used for systematic searches of scientific literature on Finsler geometry and cosmological models and mathematical derivations; Google Gemini assisted with mathematical verification and writing clarity. All theoretical content, ideas, scientific conclusions were developed and critically evaluated by A. Backmund LLM-EFT-Lapse Collaboration