报告题目: Cosmological Correlators with Strongly-coupled Exchange

报 告 人: Chen Yang 杨宸 (Scuola Normale Superiore)

报告时间: 2024年9月12日13:30

报告地点: 物理楼W105

报告摘要: I will discuss primordial universe scenarios where the inflaton is weakly coupled to a strongly-self-interacting theory, and study the imprints in cosmological correlators. There are three general scenarios for the strongly coupled sector based on its mass gap in Hubble units. I will focus on the gapless scenario, which I fully solved, and will discuss two approaches to computing its correlators: the Cosmological Bootstrap and Mellin-Barnes integration. Finally, I will compare the signals to weakly coupled scenarios and comment on the potential to distinguish them.

报告人简介: I’m currently a PhD student in the theoretical high-energy physics group at Scuola Normale. Previously I graduated from Fudan University in 2020 and obtained my master’s degree from the University of Amsterdam in 2022. My current research interest lies in de Sitter physics with possible applications of holography, in both mathematical and phenomenological aspects.