02/28
2023
Seminar
- Title题目 Ruling out primordial black hole formation from single-field inflation
- Speaker报告人 Jason Kristiano (The University of Tokyo)
- Date日期 2023年02月28日 14:00
- Venue地点 Join Zoom Meeting https://us02web.zoom.us/j/87253087638?pwd=eFFBVG5VdjIyd1lyamxRWDZldzRuQT09 Meeting ID: 872 5308 7638 Passcode: 998057
Abstract摘要
The most widely studied formation mechanism of a primordial black hole (PBH) is collapse of large-amplitude perturbation on small scales generated in single-field inflation. In this talk, we will present the one-loop correction to the large-scale power spectrum in such a model. We find models producing appreciable amount of PBHs generically induce too large one-loop correction on large scale probed by cosmic microwave background radiation. We therefore conclude that PBH formation from single-field inflation is ruled out.
报告人简介
Jason Kristiano is currently a Ph.D. student at Research Center for the Early Universe (RESCEU), The University of Tokyo. He obtained his bachelor degree from Universitas Indonesia in 2018 and master degree from The University of Tokyo in 2021. His research interest is related to the quantum field theory of cosmological perturbation. The main goal of his research is to theoretically constrain cosmic inflation.
邀请人 王少江
蔻享直播：https://www.koushare.com/lives/room/654380
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