Confronting Inflation and Reheating with Observations: Improved Predictions Beyond Slow-Roll

2025/07/27 by Ye, Ying-Ying, Gu, Bao-Min · 2 citations
#Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th)

paper · doi:10.48550/arxiv.2507.20307

Abstract

Using the latest observational data, we constrain the inflationary dynamics and the subsequent reheating epoch. Predictions for both phases can be significantly improved by employing numerically computed results compared to the slow-roll approximations. These results enable a more accurate reassessment of the observational viability of inflationary models, provide tighter constraints on the reheating history, and help lift the degeneracies in the predictions of inflation and reheating dynamics. Given current observational bounds, this enables a more accurate understanding of the early universe physics.

Citations

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Cited by

• Heavy Field Effects on Inflationary Models in Light of ACT Data
• Inflationary Models with Gauss-Bonnet Coupling in Light of ACT Observations

Related

• Enhancing inflationary model predictions via refined slow-roll dynamics
• Model-independent constraints on inflation and reheating
• ACT-ing on inflation: Implications of non Bunch-Davies initial condition and reheating on single-field slow roll models
• Inflationary models constrained by reheating
• Dynamics of cosmological inflation and predictions for reheating in the\n light of 2018 PLANCK results