Dilaton-induced variations in Planck constant and speed of light: An alternative to Dark Energy
arXiv:2412.04257 · doi:10.1016/j.physletb.2025.139357
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 and speed of light . Our mechanism for generating variable and in spacetimes via the dilaton offers a viable alternative account for late-time cosmic acceleration, bypassing the need for dark energy.
arXiv commentTo appear in Physics Letters B. arXiv admin note: text overlap with arXiv:2408.02583
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