Axion Coupling and Cosmic Acceleration
Published:Dec 29, 2025 11:13
•1 min read
•ArXiv
Analysis
This paper explores the role of a \cPT-symmetric phase in axion-based gravitational theories, using the Wetterich equation to analyze renormalization group flows. The key implication is a novel interpretation of the accelerating expansion of the universe, potentially linking it to this \cPT-symmetric phase at cosmological scales. The inclusion of gravitational couplings is a significant improvement.
Key Takeaways
- •Investigates the role of \cPT-symmetric phases in axion-based gravitational theories.
- •Uses the Wetterich equation to analyze renormalization group flows.
- •Offers a new interpretation of the accelerating expansion of the universe.
- •Includes gravitational couplings in the analysis.
Reference
“The paper suggests a novel interpretation of the currently observed acceleration of the expansion of the Universe in terms of such a phase at large (cosmological) scales.”