APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Kohei Kamada (Arizona State U)
Title: The interplay between the primordial magnetic fields and particle physics
Date (JST): Wed, Mar 08, 2017, 13:30 - 14:30
Place: Seminar Room A
Abstract: Recent observations of TeV blazars by Fermi identified deficits of secondary GeV cascade photons. These observations can be explained by intergalactic magnetic fields, which may have a primordial origin. If magnetic fields are generated before the electroweak symmetry breaking, nontrivial interaction between magnetic fields and the SM/BSM particles can cause some interesting and non negligible phenomena in the early Universe. In this talk, I will show that the baryon asymmetry can be generated by the chiral anomaly and this mechanism might be responsible for the present baryon asymmetry of the Universe. I will also show that the axion-like particles can be produced by photon-axion conversion via primordial magnetic fields and axions generated by this mechanism might be responsible for the present dark matter.