Time and Date
15:00-17:00, March 08^th, 2024

Title
"Neutrinos from the Big Bang: how they evolved and how to see them"
by Gordon Baym (University of Illinois at Urbana-Champaign)

Place (hybrid)
Room 745, Science Complex B (MAP H-03)

Zoom registration for participants:
https://us02web.zoom.us/meeting/register/tZEsdO2rqDsiH9T3H__SwweqcLrA1RrMSNkF

Abstract
Primordial neutrinos from the Big Bang are about 100 times more numerous 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, with definite helicity (neutrinos left-handed and antineutrinos right handed). However, 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 discuss future detection of relic neutrinos.

Point
GSP 1

Contact
Toru Kojo (Physics, GP-PU),
E-mail: toru.kojo.b1 * tohoku.ac.jp (Replace * with @)