Observational predictions of some inflationary models

This paper presents the CMB angular power spectrum obtained using the \texttt{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...

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Bibliographic Details
Published in:arXiv.org 2024-10
Main Authors: Pozo, Daniel, Calvache, Lenin, Orozco, Esteban, Arévalo, Vicente A, Rojas, Clara
Format: Article
Language:English
Subjects:
Astronomical models
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Summary:This paper presents the CMB angular power spectrum obtained using the \texttt{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 (\(\ell \lesssim 90\)), intermediate (\(90 \lesssim \ell \lesssim 900\)), and small (\(\ell \gtrsim 900 \)) 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, \(\Omega_m\), \(\Omega_b\), \(\Omega_{\Lambda}\), \(\Omega_K\) and \(n_\sca\). We also perform a Bayesian analysis using the \texttt{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.
ISSN:2331-8422