PPC 2024: XVII International Conference on Interconnections between Particle Physics and Cosmology

Unveiling the dynamics of reheating in modified chaotic and mutated hilltop inflation

15 Oct 2024, 14:00

15m

Seminar Room 6-7, Convention Center (IIT Hyderabad )

Parallel talk Parallel - Cosmology

Speaker

Sudhava Yadav (Department of Physics, Malaviya National Institute of Technology, Jaipur)

Description

The Reheating era of inflationary Universe can be parameterized by various parameters like reheating temperature $T_{\text{re}}$, reheating duration $N_{\text{re}}$ and average equation of state parameter ${\bar{\omega }}_{\text{re}}$, which can be constrained by observationally feasible values of scalar power spectral amplitude and spectral index. In our work, we have done the single phase reheating study of a modified form of quadratic chaotic potential in order to put limits on parameter space of model. By investigating the reheating epoch using Planck+BK18+BAO observational data, we show that even a slight modification in basic chaotic model can make it consistent with latest cosmological observations. We also find that the study of reheating era helps to put much tighter constraints on model and effectively improves accuracy of model.

Presentation materials

Sudhava PPC.pdf