Dilaton-induced variations in Planck constant and speed of light: An alternative to Dark Energy

Abstract

We reveal a novel aspect of scale-invariant actions that allow matter to couple with a dilaton field: The dynamics of the dilaton can induce variations in the Planck constant $\hslash$ and speed of light $c$. Our mechanism for generating variable $\hslash$ and $c$ in $\text{curved}$ spacetimes via the dilaton offers a viable alternative account for late-time cosmic acceleration, bypassing the need for dark energy.

To appear in Physics Letters B. arXiv admin note: text overlap with arXiv:2408.02583

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Cited by in corpus (3)

• New analysis of SNeIa Pantheon Catalog: Variable speed of light as an alternative to dark energy
• A mechanism to generate varying speed of light via Higgs-dilaton coupling: Theory and cosmological applications
• Brans-Dicke-like field for co-varying $G$ and $c$: observational constraints