7–11 Jul 2025
America/Toronto timezone

Reliable effective theory of warm inflation in the light of CMB data

7 Jul 2025, 14:10
20m

Speaker

Prof. Vahid Kamali (BASU & McGill)

Description

This study investigates the alignment of theoretical and observational Cosmic Microwave Back-
ground (CMB) power spectra, focusing on the high-dissipative regime of the most reliable effective
theory of inflation. Using marginalized posterior distributions, we analyze parameter spaces con-
strained by our model and compare them to observational data from the Planck 2018 results. The
diagonal plots of marginalized distributions reveal the most probable values for each parameter, pro-
viding insights into the model’s consistency with empirical evidence. We parametrized the model
with an accelerated cosmology solution instead of a specific potential for the model. A comparative
analysis of the theoretical power spectrum (f = 0.186 CT = 100) and Planck 2018 data highlights a
close match, particularly at the first acoustic peak ℓ ≈ 220 and subsequent higher-order peaks. These
results emphasize the robustness of the proposed model and its potential for accurately describing
the early universe’s dynamics.

Authors

Ms Zahra Shomali (BASU) Prof. Vahid Kamali (BASU & McGill)

Presentation materials

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