Evaluating Variable Speed of Light (VSL) Cosmologies: A Multi-Agent Empirical and Theoretical Assessment
This investigation evaluates whether cosmic inflation can be replaced by variable speed of light (VSL) cosmologies. We analyze Albrecht-Magueijo and Barrow formulations against Planck CMB angular power spectra, quasar fine-structure constant (alpha) limits, and Fermi-LAT gamma-ray Lorentz invariance bounds. While resolving the horizon problem geometrically, strict empirical bounds constrain Lorentz-violating dispersion.