Speaker
Prof.
Tanmoy Modak
(Indian Institute of Science Education and Research Berhampur)
Description
In this talk, I will discuss the impact of preheating and higher-dimensional operators on the high spectral index ($n_s$) measured by ACT/SPT collaborations in the CMB+BAO data. The recent results place Higgs-Starobinsky inflation in tension at the $2\sigma$ level. I will show how preheating and higher-dimensional operators can help alleviate this tension.
Author
Prof.
Tanmoy Modak
(Indian Institute of Science Education and Research Berhampur)