Reheating study of Mexican-Hat-type Potentials

2025/08/22 by Yadav, Sudhava, Yadav, Akash, Venkataratnam, K. K. · 1 citation
#Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences

paper · doi:10.48550/arxiv.2508.16144

Abstract

We study reheating in Mexican Hat type potentials, emphasizing the role of the post-inflationary equation-of-state parameter(ω_re) in shaping observable predictions. By exploring the allowed range of ω_re, we derive reheating temperature, e-fold counts, and inflationary observables, showing that the conventional Mexican Hat model satisfies Planck18+BK18+BAO constraints on n_s and r. The analysis underscores reheating as a critical link between theoretical potentials and CMB data. In addition, the holographic Mexican Hat realization is examined as a benchmark, with our results mapping its phenomenological boundaries. This work illustrates how reheating studies sharpen constraints and guide refinements of unified inflationary scenarios.

Citations

• Planck 2018 results
• Planck2018 results
• Inflation and the Theory of Cosmological Perturbations
• Fermionic current-carrying cosmic strings: zero-temperature limit and equation of state
• A new inflationary universe scenario: A possible solution of the horizon, flatness, homogeneity, isotropy and primordial monopole problems
• A new type of isotropic cosmological models without singularity
• Field theories with « Superconductor » solutions

Cited by

• Black Hole Evaporation Driven by Non-Thermal Squeezing Through SNS and CSNS Dynamics

Related

• Reconstructing k-inflation from n_s(N) and reheating constraints
• CMB Constraints on Reheating Models with Varying Equation of State
• Reheating and Inflationary dynamics driven by an inverse tangent potential
• Preheating and Reheating after Standard Inflation
• Reviving Quadratic Inflation: Minimal Deformation for CMB Compatibility and Reheating Consistency