Inflationary Potential as seen from Different Angles: Model Compatibility from Multiple CMB Missions ...

• Main Authors: Giarè, William, Pan, Supriya, Di Valentino, Eleonora, Yang, Weiqiang, de Haro, Jaume, Melchiorri, Alessandro
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: arXiv 2023
• Subjects: Cosmology and Nongalactic Astrophysics astro-ph.CO; General Relativity and Quantum Cosmology gr-qc; FOS Physical sciences; South pole
• Online Access: https://dx.doi.org/10.48550/arxiv.2305.15378; https://arxiv.org/abs/2305.15378

The cosmic microwave background (CMB) temperature and polarization anisotropies, as observed by independent astronomical missions such as WMAP, Planck, and most recently the Atacama Cosmology Telescope and the South Pole Telescope have played a vital role in accurately constraining cosmological theories and models, establishing cosmic inflation as the most widely accepted theory for describing the physics of the early Universe. However, the absence of a definitive detection of B-mode polarization and the emerging discrepancies among different CMB experiments present a challenge in determining which inflationary models best explain the observed data. In this work, we further explore this difficulty and conduct a case study by analyzing four well-known inflationary potentials in light of the latest CMB temperature and polarization anisotropy measurements and lensing data released by the Planck satellite and the Atacama Cosmology Telescope. Additionally, we incorporate B-modes polarization data from the ... : 27 pages, 2 figures, 3 tables. V2: updated to match the JCAP published version ...