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Ruling Out Primordial Black Hole Formation From Single-field Inflation
02/28
2023
Seminar
- Title Ruling Out Primordial Black Hole Formation From Single-field Inflation
- Speaker Jason Kristiano ( The University of Tokyo)
- Date 14:00-16:00, Feb.28, 2023
- Venue https://us02web.zoom.us/j/87253087638?pwd=eFFBVG5VdjIyd1lyamxRWDZldzRuQT09 Meeting ID: 872 5308 7638 Passcode: 998057
Abstract
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.