Date&Time | Tue Nov 19 2019 (17:00 - 18:00) |
---|---|
Speaker | Takeshi Kobayashi |
Affiliation | KMI (Nagoya University) |
Title | To B or not to B: Primordial magnetic fields from Weyl anomaly and Beyond |
Abstract | For more than twenty years, it has been argued that the Weyl anomaly of quantum electrodynamics sources cosmological magnetic fields in the early universe. If true, this would be a natural way to produce the seed magnetic fields of our universe within the Standard Model. In this talk, I will examine this long-standing claim and show that there is actually no production of coherent magnetic fields from the Weyl anomaly, irrespective of the number of massless charged particles in the early universe. I will also comment on other possibilities for magnetic field generation. |
Remarks | |
Slide/Video |
slide1
|