Early Scalar Field Model Constrained by Observations
Analysis
Key Takeaways
- •The paper explores a cosmological model with an interacting scalar field and radiation.
- •The model is constrained using observational data (Hubble data, Supernovae, BAO, CMB).
- •The interaction parameter is consistent with zero, but small deviations are allowed.
- •The model can partially alleviate the Hubble tension.
- •The interacting scenario is statistically competitive but not decisively preferred by current data.
“The interaction parameter is found to be consistent with zero, though small deviations from standard radiation scaling are allowed.”