Neutrinos from the big bang: probing cosmic gravitational inhomogeneities & magnetic fields in the early universe
- 日時
- 2023年3月13日(月)13:30 - 15:00 (JST)
- 講演者
-
- ゴードン・ベイム (Professor Emeritus, University of Illinois, USA)
- 会場
- コモンルーム (246-248号室) (メイン会場)
- via Zoom
- 言語
- 英語
- ホスト
- Tetsuo Hatsuda
Primordial neutrinos from the Big Bang are about 100 times more prevalent than solar neutrinos, and at least two-thirds of them are now non-relativistic. These relic neutrinos, which have never been detected, decoupled in the early universe predominantly in helicity eigenstates. As I will discuss, their subsequent propagation through gravitational inhomogeneities and even background gravitational radiation, as well as cosmic and galactic magnetic fields partially flips their helicities, and can produce noticeable effects in their eventual detection. I will briefly mention future detection of relic neutrinos.
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