I am Nayan Das, a research scholar and PMRF fellow at the Physics Department, Indian Institute of Technology (IIT) Guwahati. I have been working under the supervision of Dr. Debasish Borah (link to the research group website) on the topic - "Cosmological signatures of beyond Standard Model Physics." I obtained my BS.MS. Dual Degree in Physics from Indian Institute of Science Education and Research (IISER), Bhopal.  Recently, I have been selected for the prestigious "Prime Minister's Research fellowship"(PMRF) for the December 2021 cycle.