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astro-ph.CO2025
Probing Scalar-Photon Coupling in the Early Universe: Implications for CMB Temperature and Anisotropies
Yousef Bisabr
The Hubble tension, as a persistent discrepancy between early-time and late-time measurements of the Hubble constant, motivates explorations of new physics in the early Universe. I…
gr-qc2025
Interacting Early Dark Energy
Yousef Bisabr
We explore a model of interacting Early Dark Energy (EDE) in which a minimally coupled scalar field, representing the EDE, interacts with the radiation sector through an exponentia…