报告题目：Non-Gaussianities in the PBH Formation and Induced GWs

报 告 人：皮石 (Institute of Theoretical Physics, CAS)

报告时间：2024年5月9日14:00

报告地点：理科楼C302

报告摘要：I will briefly review the recent progress in the non-Gaussian effect on the primordial black hole formation and the induced GWs.The most promising mechanism of generating PBHs is by the enhancement of power spectrum of the primordial curvature perturbation, which is usually accompanied by the the enhancement of non-Gaussianity that crucially changes the abundance of PBHs. I will discuss how non-Gaussianity is generated in single field inflation as well as in the curvaton scenario, and then discuss how to calculate PBH mass function with such non-Gaussianities. I also show non-Gaussianity only has mild effects on the induced gravitational waves (GWs), which gives robust predictions in the mHz and nHz GW experiments.

Ref: 2404.06151

报告人简介：皮石2013年于北京大学物理学院取得博士学位，之后在韩国APCTP、中国科学院理论物理研究所、京都大学YITP、东京大学IPMU进行博士后研究。2020年起在中国科学院理论物理研究所担任副研究员、博士生导师。主要从事宇宙学微扰论、暴胀宇宙学、引力理论、以及背景引力波方面的研究。