2024/01/01 by Daniel Pozo, Pozo, Daniel, Lenin Calvache +5 · 1 citation
Physics and Astronomy · Earth and Planetary Sciences · #Cosmology and Gravitation Theories #Geophysics and Gravity Measurements #Solar and Space Plasma Dynamics
paper · pdf · doi:10.48550/arxiv.2401.00835
This paper presents the CMB angular power spectrum obtained using the CAMB code for three different models of inflation: the Starobinsky inflationary model, the generalized Starobinsky inflationary model, and the chaotic inflationary model with a step. The results are compared with the most recent data reported for the Planck mission. An analysis of the large (ℓ \lesssim 90), intermediate (90 \lesssim ℓ \lesssim 900), and small (ℓ \gtrsim 900 ) angular scales is performed. We report the position of the peaks in the intermediate region so as the cosmological parameters obtained in each of the models: age of the universe, Ωm, Ωb, ΩΛ, ΩK and n_\sca. We also perform a Bayesian analysis using the Cobaya code to evaluate our three best-fitting models. Additionally, we generated contour plots (n_\sca,r) for our inflationary models, taking into account the number of e-folds between the end of inflation and the completion of reheating.